Wondering if anyone can tell me what I need to do to drill a pilot bushing

Okay so I have a mopar 400 and I plan on using a mag drill to drill the whole for a bronze bushing I really don't want to cut the shaft go the needle bearing route it was a automatic 400 out of a motor home it seems I saw a diagram but I can't seem to find it the cranks still in the motor I don't really wanna pull the crank since the engine only has about 50,000 miles this is going in a truck I aquired