Go here
KA-T.org - The Home of 1000+ whp/7 sec Turbo KA's
Join forum there, then ask question. Ask the source where people who've built their KA-Ts.
Honestly, too many damn variables and there are just as many ways to have it run well as well as ways to screw it damn much. Only difference is there's no OEM owners manual nor OEM KA-T parts for building a KA-T.