I did this to my 63 Valiant and it was pretty easy, it took me about 1 year to complete. It took a long of time tracking down parts and building the engine. My only complaint was smashing in the firewall for the distributor, because its almost in the same spot as the wiper motor which i broke and was fortunate to find a replacement, cutting and welding would be a better solution if thats feasibile. I waited until i had it mounted and then hammered accordingly. I think you actually need the v8 centerlink but there seems to be about 3/4 of an inch clearance between the pan which i would think might work with the /6 but i didnt want to chance that so i found a centerlink. I used a pair of 360 magnum manifolds with manual steering and was able to move column over just enough, im prett sure there isnt enough room with power steering. You can also use early 273 manifold. Im working on a 64 with power steering and would really like some headers but theyre limited to dougs and tti unless you get those spitfire's that are out there, and for the transmission youll need a v8 pushbutton 904 unless your wanted 4 speed and it will all mount up in the stock location.