if you upgrade 4t65hd it could take alot of abuse, my gtp is making 520 fwhp, A engine swap coming in the near future, to my 87 GN
I agree I know of some low 12sec GTP's in this area with just minor upgrades to the stock tranny. What engine swap are you planning for the GN?
ps Didn't mean to change the subject and highjack the thread :frown: