68 H-code 'cuda - needs just about everything

My Barracuda is a 68 383 car. When I got it, there was no motor, trans, driveshaft or radiator. For my first go at getting it on the road, I'm more concerned with just getting parts that work and fit without hacking the car up than making it numbers matching perfectly correct.

A few questions for those who've been around the block a few times:

As I'm looking for parts for this thing, can anybody offer any insight what to specifically look for or avoid? I found a 383 from a 69 B-body. Will this motor work? Will any old big block 727 work, even like... out of a truck or something? Will a driveshaft from any other car work or will I need one custom made? What radiator should I try to find? Is there one from some other car that will work good for a big block Barracuda or should I go with some kind of aftermarket aluminum job?

The A-body 383 -440 blocks use a unique left side motor mount ( if your car has the A-body Big Block K-member still in it). It mounts with a engine mount bracket that wraps arround the front of the motor and has two bolts that screw in from the front into the block. Some engines will allready have these two holes, some will have the bosses there but not be drilled and tapped, and some do not have the bosses at all. You want to avoid this type block. If i can get to the storage I'll take a picture of the holes. Most BB 727's will work as long as it is the slip in rear yoke type. The driveshaft you'll have to measure what you need after the motor/trans is in.