Installed the PacBrake today. Took me about four hours in the driveway -- no hoist available. Hardest part was tightening the 5/16" screw at the bottom of the compressor. PacBrake has done an outstanding job with this exhaust brake. Everything fit perfectly! It helps to loosen the first exhaust clamp to the rear of the engine when removing the factory exhaust elbow. I used a large needle to remove the plugs from the 50 pin connector and it worked great. If you mount the switch on the dashboard as shown in the Pacbrake instructions, be sure to place it where it does not allow the switch to interfere with the plastic reinforcement molded into the back of the dash.