Hey Guys, a follow up here, I was able to replace the rear cover gasket on my convert with the transmission in place, but let me tell you, it was a real beatch! There is barely enough room to remove the cover from the output shaft, but it can be done. The clearance to the rear of the frame made it where I had to "crab " it a little to clear, but I did it! I was able to squeeze in there, and clean everything up, removing the torn old gasket,and replacing it, using a bit of permatex 300, as I dont want to have to repeat this. To be honest with ya all..If I had to do it again, I think I would just pull the trans and do it on the bench.....There really wasnt that much time /work saving by doing it this way. Oh well at least I know its do able!
Rick