Ford Ranger
Most people just put a 302/351 windsor based engine in. If your on a real junkyard budget go for a Ford 2.3L turbo. Those things can handle 400whp on the stock bottom end, just change the rod bolts for some added assurance.
I'm not typically impressed with 4 bangers... but it's quite a great engine. Check out www.turboford.net
With some cheap aftermarket manifold(or ported stocker) and a decent camshaft, all you gotta do is hog out and port everything(head, manifold, intake), add a big intercooler, and a holset turbo. Best bet for the computer would likely be an aftermarket EFI system. I'm planning on using Megaquirt since it's a build-it-yourself type of system and is way tunable and extremely budget friendly. www.megasquirt.info
I'm going to use a first gen RX7 to swap something into, and I stumbled upon this link... I think I'm sold:
http://www.eville140.com/rx7.html
Here is a good idea of a budget build-up that is very in depth and greatly helpful... It's in a fox body mustang so I think it's around the same weight as your Ranger.
http://silverbackracing.itgo.com/motorinstall.html


