There is very little clearance between the header and frame rail on the passenger side. Tighten the top two rear nuts with a 13mm open-end wrench and a lot of patience. Using a 13mm stubby open-end wrench makes this easier, room to only turn the nut about a 1/8th of a turn each time because of interference from the valve cover. Make sure all nuts are tightened firmly.
22. Install starter, torque to 18-20 ft-lbs. Tighten A/C compressor torque to 20 ft-lbs
22. Install the oil dipstick tube by sliding it down from the top of the engine in between the 2nd and 3rd pipe from the left on the header. The tube will have to be bent slightly in order for it to clear the header flange. To make it easier remove the fuse box cover in the engine compartment to give the added clearance needed when sliding the tube back in place. Reinstall the retaining nut with an 8mm socket. Reinstall dipstick into tube.
23. Install the motor mounts using 15 mm and 13mm deep sockets and extensions. Make sure the ground straps and wiring harness brackets get reinstalled on their respective sides. Tighten down the nuts to 25-33 ft-lbs.
24. Connect the O2 sensor wiring harness extension to the connector on the rear of the block and O2 sensor at the header collector for each side. Use Zip-ties to keep the wires away from the headers.
25. Install the K-member. Jack the engine back to its normal height or a little above. While still supporting the engine with the floor jack, use a floor jack to raise the K-member back into the original position under the vehicle. Using 15mm and 18mm sockets reinstall the 8 bolts that hold the K-member in place. Torque lower k-member bolts to 66 ft-lbs, upper k-member bolts to 85 ft-lbs.
26. Install the motor mount bolts. Lower the engine down into position making sure the motor mounts line up properly. Using an 18mm socket and extension install the bolt that attaches the motor mount to the K-member. Torque to 110-115 ft-lbs.
27. Install steering rack. Cut the zip-ties holding the steering rack to the sway bar or what you used. Using 15mm socket and 18mm deep socket with extension reinstall the steering rack onto the K-member. Finish by tightening the bolts with the breaker bar. Torque to 35 ft-lbs.
28. Reattach steering shaft. Slide the steering shaft over the fitting on the steering box and use a 13mm socket to tighten the retaining bolt. Torque to 35 ft-lbs.
29. Install G-load brace using 15mm socket.
30. Install springs. Install the spring back into their perch by pushing down on the lower control arm and sliding them in top first with top and bottom isolators. Make sure the springs are aligned with the pigtail in the same location it was prior to removing. Using a floor jack under the control arm, jack the control arm up to compress the spring.
31. Reattach ABS sensor to spindle using E8 Torx-bit and a dab of hi-temp thread locker.
32. Reattach struts to spindles using 21mm and 24mm sockets. Use a dab of hi-temp thread locker on the threads of the bolt and torque to 170 ft-lbs
33. Reattach the ABS wiring harness bracket to the strut using a 24mm socket. Then place back on the two grommets.
34. Reattach sway bar end links using a 15mm deep socket and 10mm open-end wrench on the flat spot in the middle of the end link to keep the link from twisting. Tighten the nut until the bushings are slightly squished.
35. Reattach tie-rods to the spindle. Using an 18mm deep socket tighten the nut on the end joint. Tighten the nut until the end joint is pressure fit into the spindle back the nut off a quarter of a turn then snug it back up. Line up one of the slots in the nut with the hole that passes through the end joint and install the cotter-pin.
36. Install rotors and caliper mount to spindle. Slide the rotor onto the studs and then slide caliper mount over rotor and attach using 15mm socket. Put a dab of hi-temp thread locker on the bolts before installing on spindle. Torque the bolts to 90 ft-lbs.
37. Install caliper to caliper mount with pads on caliper mount in place. Use 12mm socket, torque to 25 ft-lbs
38. Install wheels back on using lug wrench or deep socket and torque lug nuts down to 100 ft. /lb.
(Steps 30-38 are the same for driver and passenger side)
39. Install the new shorty H/X-pipe to the headers and cat-back.
40. Attach rear O2 sensors to their respective connector on the tail of the transmission housing.
41. Reconnect negative terminal on battery using 8mm socket or box-end wrench.
42. Close the hood and lower the car down off of the jack stands and/or ramps. Take the car for a test drive. Listen for exhaust leaks and rattles.
Installation instructions provided by American Muscle customer Miguel Rocha 12.11.12