Haven't heard of Rangers being used. I have a personal aversion to them, so it isn't something I'd do but would remember.

The S-10s are the popular one for most newbies.

I've seen a 34 Ford PU on a Toyota PU frame. Torsion bar front so ride height adjustment is there and the suspension is smaller to fit within the fenders.

I have seen a few well done frame swaps, but it tends to be the first grasp of the uninformed. To do it right is as much or more work than adding the updated stuff to the original frame.

The HAMB is all about trad stuff, so there probably isn't much there.

http://www.hotrodders.com/forum/
has a lot of traffic and info. I don't go over there much, but have found great info from time to time when I do.
You can also build your own frame like a T-bucket, with any suspension, drivetrain, steering and body mounts you want. This would be more suitable for a stripped down light car like a rat rod. For a 35-up full fendered car, you are better off with something more substantial.
http://www.tbucketeers.com/forums/frames-and-chassis.54/