Scamp intrepid cross over issues

First I'd make a call to Trans-dapt and see what they come up with. Years back they would make anything fit anything, I don't know if they still do 1-offs, but they might have something. A custom adapter plate shouldn't be terribly expensive if you can find a local machinist to do it for you, the trick will be to find a trans that is close.
I had an intrepid with the 3.5 and it was great, I even toyed with the idea of a rear-engine, 4w-steer dune buggy, but too many projects and somebody made me an offer...