Turbos have less of a "drag" on the engine so they can create more power I guess. However unless you can do all the fab work (welding pipe) you aren't saving much over a S/C. If you do go S/C buy a SBF or SBC kit and tweak the brackets. I had a Chevy Paxton kit on my old 440. I cut the main bracket, welded to extentions and had the crank pulley drilled for BB mopar. I had maybe $2200 in the entire set-up including carb prep/ fuel system and gauges.