Sounds to me like a T120R or V, if it is an RV, you got an incredible deal. From what I understand the RV was made in 71 with a 5 speed tranny. If your positive its a 72, then it is probably an R or V from what I understand. I have only been at this for about 8 motnhs or so now, so donĀ“t take my word as gospel. Let me know if you need anything else, I still consider myself new to this, but I know plenty of old hats in the British-lump world. Email me if you have questions.