Ongoing vibration issue

I would think so yes. This was back in the 80's and my buddy helped me with it. He was surprised I didn't mess up the front pump of the tranny. I put up with it for about a year.:BangHead: But if you used a different motor did it already have dowels in that motor? Probably not your problem but just wanted to make a point of it.
Yes, there were already pins in the new block.