yeah... and as far as the p29 and pm7 pistons go... that's not really a road you want to go down... unless you are getting after-market ones made of a stronger material... I think NPR offers some for around $120... because the ring lands on those pistons will not last very long under the 12:1 compression even when properly tuned... and if you do go the high comp route... please get your shit balanced because if the piston weights do not match the weight of the throws on your crank, the rotors in your oil pump will be trashed and your engine will be destroyed.... however, as Scotty stated 170 HP could easily be had on boost with 6-8 psi and still be a reliable DD... then you wouldn't even have to go internal...