The best option is to make a bushing that uses the torque converter register. If I could takes pics I woull post up how I do it.
I never use roller bearings on the input. I know it's all the rage, but then again, so is hip hop. I have repaired about 25-30 input shafts that got jacked up by roller pilot bearings. And in the end, I end up making my own bushings. So I just make a bushing that uses the TQ register, as I said above. Then you don't have to worry if the crank was finished drilled for the pilot bushing.
Any freshman level machinist can measure and make a bushing. I'd bet there are many ltttle "home shop" guys within a 15-20 drive of your house who can do it, let alone a regular machine shop.
Chrysler used to sell that newer style bushing with a bushing instead of a roller bearing so it looks like the only way to go that route is to make a bushing?
If I was going to go to the trouble of making something I would just make the part that fits the convertor register and use the bushing that goes directly into the crank ???
