1967 440 Barracuda

Just acquired a 1967 Barracuda coupe. Solid California car with no drive train. I have a 440 and 727 in the corner of my garage. How feasible is such a project? What do I have to look out for? Have a lead on a 8-3/4 out of a B-Body. Will this fit without extensive modification?
Playing around with a few different ideas here including the RB, a small block (318, 340, 360) or a modern crate hemi. Seeking expert opinions and open minded.

Putting a big block in an A body car is an exercise in problem solving. If you like to do that sort of stuff then go for it. It helps to look at a few cars before you try it yourself since there are a lot of bad choices out there that people have made when building these cars. I'm in the final stages of my big block Duster project and it was a challenge. I've seen a lot of hack jobs so I knew some of the problems to avoid but I still struggled at times.
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