I'm in the process of pulling the motor and A518 out of my '90 RC. At 145k, just needs freshening up, however I couldn't resist going with a 360 to replace the OEM 318 with. I'm thinking that now that the motor is out, and the trans will be out tomorrow, I figure I'll leave the transfer case in place to help line things back up during re-assy. I have the overhaul kit from Drivetrain Specialties, soooooo, I figure I'll pull the D-shafts and finish the job up by replacing both u-joints and freshening up the transfer case, last? Makes sense to me. Anybody else done this and learned anything from this they can share? I'd appreciate any help I can get.