If you have the stock radiator, any decent radiator shop can swap the bottom outlet to the other side and you are money.
you can almost make anything fit if you have a good imagination. just go on some radiator sites and see if they have the measurements on it modine would be the first to hit. or go to NAPA and get their modine/radiator book and it has all of the measurements and hose locations they offer. its a big book so be sure you have some good measurements of what you need.
You might try one from a 67-79 F100. They fit in a 53-56 with a slight tweaking of the original 53-56 F100 Radiator cradle.
I'm not a Ford guy but... Can't you use a 289 water pump to change hose direction. The 65-66 mustang is the universal radiator doner.
not on a roller motor. they are reverse rotation so you are kinda obligated to using them, plus you have a serpentine belt that way and it looks a lot better than having 3 or 4 belts on a motor.
Sacramento Vintage Ford has a 4 row rad with ****** cooler. I picked one up for my Pontiac. You can get it with Ford or Chevy hose mounts.
A 302 swap radiator for a 64-66 Mustang should fit into anything. That's what I put into my '50 Dodge. I got mine from Mustangs Plus for $157. They're really narrow. Check them out.
Speedway motors has alum rads for $269.00 ford or chevy outlets also brackets to attach ect. go to their web site and check it out