After a starter issue that has been taken care of with replacement, there is now a spot on the ring gear that is missing a few teeth. It's a 454 with a berkely 12jc pump. Has rockwell h beam drive line. My driveline case has a larger access door that I can get to the u joints. By the packing a on the case the case has a lower clamp. With removing the u joint and unbolting the case can I replace the ring gear with the flywheel still bolted in without pulling the motor?