I pulled the tranny out to put in a new PTC converter. The previous owner said there was some work done on the transmission. It is labeled as a Service Replacement Transmission Assemble for GM and the ID is not in the "normal" place, nor does it follow the stock sequence. Does anyone know details about these or info from the ID tag? I am guessing it has a decent servo and governor? I thought I would go ahead and throw in a CK shift kit, anything else i should check while its out?