not trying to rain on your parade cuz its your car and your dough...but I think it sounds great to say you want 400 ponies when in reality if you were able to drive the car making 300-320 you would probably think you were tied to a rocket sled...even at 300whp traction and tranny issues are gonna be huge...just check out some of the 1/4 mile times of some of the guys here who are nowhere near 400hp...I dont care what anyone says, a street car that runs in the 12s at the dragstrip is FAST...but like I said before it is your car and your goal...maybe your hunting for "king of the hill" on this board (boy would I like to see a meet drag match for that ...when my GP becomes my second car instead of my daily driver I'm thinking strongly about going boosted myself but given the rising price of gas I'm sure I'll stick to a low key setup...that'll be plenty fast for me...good luck and happy HP hunting