Input Shaft

This is why if you are planning to bring the horsepower of your Cummins equipped with an automatic transmission to 375-400 h.p. it is imperitive that you think about purchasing some Billet, to avoid possible breakage. . .

What happens is the metal is not as strong on the splines and stripping of the splines happens... stopping your movement instantly.:bang

I have seen a bone stock 95 12 valve do this so Id say do it to any stock truck