Orda - I was happy with Livernois Motorsports. They did mine in 2004. I know others have not been too happy with theirs. Mine works great and corners pretty well. I had them install Hans Racecraft subs (not sure if they are still available). They were cool and allowed me to stay around the car during install so I could check the quality of the work. Dan Millen himself installed my Bassani Catbacks. I may go there again in the future for more upgrades!