I agree with JohnRR...how much did you spend building that 900 hp small block?

and now you can't afford to put in even a $2,000 transmission? a TKO-600 would be better than a 23 spline in my mind, but even better than that would be a viper spec T56, as there are guys with Vipers that are into the 800 hp range and doing ok on the viper spec gear box.

but even they say once you put twin turbos on the viper and push it over 900 hp, that the T-56 is no good.