I'm trying to identify what this transmission came out of originally. It was transplanted into my '89 Cheyenne and I'm fairly certain it came out of an Fbody. The tag reads 2FTM. I can ascertain the 2 being 1992, and the M signifies 700R4, but the FT I cannot find any info on. A friend wants to use this in his '55 Chev sedan. Can someone help me? Thanks