Your going to be spending either way you choose hot air or intercooled, so if a hot air engine is what youve got then that would be a good start. Those hot air engines arent as slow as some of these intercooled guys say they are and its been proven time and time again. If you need any more info on these specific engines go to the Hot Air section - http://www.turbobuick.com/forums/forums/hot-air-non-intercooled-tech.9/ and do a search, theres plenty of info.