Have you heard of the BadShoe Productions DVD on the C4 rebuild? Ken has put together a great DVD that helps you understand what the common failures are that require attention, how to measure your endplay and other clearances, etc. Also check out the Ford Automatic Transmission Forum: Ford Transmission Forum
. Further, check out AOLShove on this forum and his website where he rebuilt his transmission and documented his work.
Always good to have resources, good luck with it, you should do just fine.