Thank you so much for the advice. We are going to do a full casket replacement on the motor before it goes in as it was leaking a little oil. The motor runs strong and sounded great before it was pulled last week. We even have the 4L60E transmission that was in the S10. Really would like to keep it a manual for now, so it is good to hear the bell housings are the same. Will have to purchase new motor mounts as the one on the 4.3 had fully gone past the expiration date. The rubber fell out as we lifted it out of the frame. Any advise will be gladly accepted. As Justhorsenround said would love to just drop a SBC into it but can't beat getting a free running motor.