I would recommend the 700R4 but definitely no on the 200R4. If a V6 can commonly blow up the 200R4, the 235's torque will give it a short life too.
I'd get the adapter plate and get any old 700R4 from some 80's F-body in a junk yard for a few hundred and I'm sure you'll be happy. You'll have to figure out something for the shifter though, like maybe some kind of a center console? That or convert it to a column shift. For a column shift, check out Ididit and see what they have in one of their nice steering columns. It'd probably be integral.
