considering 4 speed swap and have questions

The drive shaft yoke is the same for 727 and a833 transmission 904 is smaller. Can't remember the brand but summit sales a stock flywheel for under a $100. I got a bilit steel one for 440 source for under $200. You can pay $400 plus easy. AJ, I think he said he had the whole donor car so apparently that should come along with the drive line also? 4 speeds are very hard on rearends, be prepared ! Ask me how I know :D