Big thank you to all, I found a set of blocks that are not in bad shape. I ran my PMP micro with an 08 GSXR 600 with 13-48 in 3rd(10 inch wheels with 70 in RR) at all the 3/8ths tracks but pushing 15,400 on the tach (it didnt live long). I think I'm close with 13-50 in third gear and an 82 inch right rear.