360 swap 1965 Barracuda

Do you already have things like motor mounts, radiator, and stuff like that? What spline is the a833? If it is the 23 spline, should be fine....actually now that I think about it, I think they only made 18 and 23....anyone else? As far as the 8 1/4, I think it would probably be close to breaking with 400plus hp. Do you already have either the 318 or the 360? The 400hp 360 would definately be more fun, but the I am sure the 318 would get better mileage, probably not much better. If you don't have either, I would probably go with the 360 for the fun factor.