u joint conversion ????

[racer_99]

I am putting a gear vendor in my 72 chevelle. I have the gear vendor yoke. I have a driveshaft from a 2000 ls1 car. I also have a ford nine in the chevelle. Here is my ? which u joint will go in the front to mate the gear vendor yoke with the ls1 driveshaft and which one will go in the back that will mate the ls1 driveshaft and the ford yoke I am not sure if it is a small or large rearend yoke.