I have a danville stg2r 68mm right now. But I have the option of getting rid of it for a single s475. The s475 is a wcfab kit for an lbz though. My questions are what all will need to be changed to make the s475 kit work on an lly and how will the s475 (E.D. s475 75/88/1.0) preform on the street with 45 overs and a 10mm stroker pump vs the 68mm.