The TCI converter should come with new bolts and you will have to drill one hole in the flywheel bigger.

 

what hole is this. and how will i know which one?

 

Two of the bolts will go in fine then the third one will be a little off and you will have to enlarge it a little. The bolts that come with the converter are fine. I have a tci in my truck btw. It isnt a big deal just a pita. Make sure you label all the connections on the tcase cause there are three or four connectors that are the same and can easily get mixed up and are a pita to get straightened out.