Hi, I've got my Ej20 turbo and its gonna be around 230hp in my '72 super. It will be running at full weight with subaru engine/rad. I'm getting a type 1 box built for it but I need to figure out which gear ratios to use. I'm thinking start with a 3.88 R/P and 4th gear to be around 0.82-0.89. With a 24" tire that will put me at 62mph at 2800-3000rpm. Now I have heard to just use the stock 1-3 with this setup but I have fears that first gear will be too low. Has anyone used this box with this setup on here and what works for you? Thanks
