No, Steve, I think I'm keeping the tranny. It's funny that the tunnel was on for the last 2 years, so I never saw the tranny. I pulled the tunnel off last week, but didn't take the time to even glance at the tranny. Even taking the pic, I just framed and snapped without paying attention. All my attention was on the tub. I probably wouldn't have given it the time of day until I pulled it for somebody! But Jerry is much sharper than I am...he noticed about 5 minutes after I posted the pic.
I am running a TR4 tranny in the TR3 right now, but the case in that one had to be welded up for the counter shaft to fit snuggly. It's working great, but I am concerned for it in the long term with the alignment on all those welds. I have been shopping for a replacement case for almost a year. In all this time, I never dreamed a good case was sitting in the back yard! I just assumed it had the TR3 box.