I have a TF and I can't see how a shift arm would work in any case if it points toward the engine. I have 2 1/2" ram horns on it with 2 1/4 pipes but I don't think it would make any difference what the exhaust was.
I used an Ididit column and their shift cable kit. I put the arm pointing to the outside and it works fine. Only issue is that I can't get it to go to 1st gear with my 700R4. Tried and tried and failed at that. But it works perfect for 2nd thru Park so I just left it that way. When does anyone need to put it in to 1st manually anyway?
Just a note here.
That is the CPP 400 steering box. This box pulls the Ididit steering column closer to the dash than they designed the length for. With it closer, the stock 55/56 steering wheel with not work. But the '57 wheel works fine and luckily that's what mine is. If an aftermarket steering wheel is used, an extending hub would probably be necessary.