how tough to put 318 in '64 Dart GT with Slant 6?

Thanks for your responses, guys. I appreciate it.

Things are a changin'. The 318 from the pickup is out of the picture. He decided to keep it and drive it for a while before spending a bunch of money before he knows exactly what he has. That was actually my suggestion to him all along and I'm glad he made that choice.

The new development is another friend turned out to have a garage full of MOPAR parts, including a short block 273 from a '65 Dart! He'll also be able to supply a lot of the stuff that goes on it (brackets, pulleys, V-8 throttle cable, Edelbrock intake w/ Carter 4bbl). He'll be putting together a list of the stuff he thinks I'll need and will not take too much money for it. I scored.

Things I know I'll need: Heads, headers or manifolds, 3-speed trans, steering center link, pedal assembly, bigger rear end (?), disc brake conversion, and I'm sure a bunch of other stuff. The plans are for a resto-rod, not some wild, noisy beast that invokes comments like, "Nice car! Sorry about the *****". Comfort will wait until the stuff "below the water line" is proper.

I'll let you know what comes out of Stuart's garage. In the mean time I'll be searching for those items listed above. I just hope they're not made out of unobtanium.

And krazykuda, your thought led me to a weird moment of thinking about some kind of 14 cylinder mutant. Thanks for the entertainment.