Is it possible you have a t case shifter off a top shift and you have a forward shift case? I agree with the cheese that they had slight differences over the years with different bends.
Also cheese, i am interested in your dog leg. That makes allot of sense for the setup. I put a R151F in my runner and didn't get the 5speed shifter with it so i scrounged up parts to get a working setup.
I had to bend (heat up and twist) my setup allot to make it work. To do this i used a simple butane torch with a vise. the upper black part of the shifter will melt off if you get the lower section your bending to hot. I was extremely careful and it was still too hot. So be prepared to glue it back on ( i think i just used some rtv to be honest). It took me 5 trys to get it to work perfect so trail and error is your best bet to perfecting it.
I couldnt tell you what i have, would be nice to get to know the differences....like your R151F type numbers for what type an dyear differences...thx
