A question to all the s/c 4.0 . I have the 06 coupe model and I was curious did any of you that installed a s/c change your compression from the stock 9.7 : 1 to a 9.0 : 1 or lower running the 380 to 400 hp with that engine ? cause i was told that it would be wise to do that so you dont blow heads and how much boost are running to get that kind of hp ? Are you still using the 7.5 rear end that you built up ? thanks