W3rd... When you fab up an SC system, one thing has to be precise, and thats the SC mount bracket. you have to ahve the thing sturdy enough not to flex when you tension the belt, and you also have to have the mountnig depth of the SC perfect too... if you dont, youll eat up and/or throw belts off. You also have to have the ANGLE of the SC perfectly parallell w/ the centerline of the motor, cuz if the pully is cockeyed youll eat up and/or throw belts.

but, on a Turbo system, you can weld up the exhaust manifold anyway you see fit, you can run the oil lines any way you want, coolant lines any way, DP any way that will fit... etc... tehre really isnt anything precise about a Turbo kit that i can think of... if you mess up the measurements or whatever... you can just grind and weld. id much rather fab up a turbo kit than an SC kit... partly cuz i like turbos anyhow.