Internet search turns up more Ford forums than Jeep. It is mated to a V6 Dauntless and D18 with overdrive. A search of T98-148C is fairly inconclusive, with a ford forum saying that the "C" denotes a 1960's ford tranny, however both Novak and AA said that the 148C is just a stamp number and has no meaning. I have read through several posts here but I think that their cases had the T18 on the side. I have talked to both Novak and AA and they both say that they think that it is a T98 and not a T18 but obviously the only way to know is to pull the top and start counting. Neither one had any idea as to what the L115 tag is for. The embedded image is of the top of the case. The two thumbnails are of the side of the case. The side of the case numbers are T98 1R 10W, and below that is the standard WG Division.