[megotmea7]

i garatee you any performance you'll be able to squeeze out of that motor, the LS1 will better it while being lighter and shorter. and it probly would get better mileage to boot, 500hp cars weighing 2800lbs with an LS1 have been getting ~29mpg, and a n/a LS1 will produce more torque in a more linear fashion than a turbo 6 for better track time driveability, and not to mention LS1's are cheap as dirt. and it has been said, the powertec(radical) V8 will not fit this criterium, it is too unreliable.