I had read about a pilot shaft bushing for a manual trans, and thought there may be something else I over looked. I basically took a running motor with a T350 and bolted it in my GMC. So I didn't know if any thing else was needed. I have some experience with installing an engine, but not a new one. I also noticed two dipstick openings on the block. Could I tap one and put in a threaded plug or would a press in plug suffice? Or have his and her dipsticks.