I just built a Reid powerglide with a Reid bell for a big block Mopar. I can't find anyone that can tell me what flexplate I need. I even talked to the engineer at Reid, what they tell you is we don't make a flexplate call one of the companies that sell our products. TCI's flexplate won't work it is the same one that they sell with their adapter plate. When you use their plate they have a peice of machined aluminum approximatley 1/2" pinned to their plate to space the starter to the front of the motor. I have two of those flexplates and have tried them, The starter drive is in the ring gear before it is even bolted up. The TCI would probably work if you spaced the starter back but I don't really like that idea. I tried calling JW but they are closed till Jan. 3rd.
I don't have anything out of the ordinary, 8 bolt crank and a 1/4" mid-plate.
Thanks, Joe Davis