Help Identify Transmission & Rear End

[Mark S.]

I've recently purchased a 1956 Corvette and am doing a body on restoration. I am really enjoying doing the restoration, but I'm having problems identifying the power glide transmission and rear end. On transmission Driver's Side the letters are D247; passenger's side is 3718243, GM12. On the tailshaft 8708184 GM 15 D237. The rear end numbers are: Driver's side GM4 1270 743833 and a large horizontal letter P. On the passenger's side the stamped numbers are AF1003.
Any help would be greatly appreciated.

Mark