If your gonna deviate from a "stock" engine by upgrading parts,I personally would build my own or have it built. If you want a direct "swap out over the weekend" deal,just get a reman/exch. Jasper and Motorcraft both have real good engines but are more expensive than some of the parts stores or machine shops. Most of the sale price engines just use lower quality/cost parts.If you have time to let your truck sit while the engine is built,talk to a machine shop about what you have in mind.

 

If your block is in good shape, have it rebuilt.. a 95 is roller ready so you can pick up a used 5.0 HO cam cheap if your staying SD or add mass air and go with a E303 cam @ 4* advanced.. a set of decent heads like AFR 185's.. stay at 030 over if bores permit.. new double roller timing set, hi-flow water pump, 1.6 roller rockers etc..
find a GT-40 upper /lower from a Gen 1 Lighting..
go www.nloc.net forums and search the Gen 1 parts for some killer deals..
don't go HP nutz on a daily driver, go for reliability and around 300-320 hp..

Check out my BKO... http://www.supermotors.net/vehicles/registry/detail.php?id=9756&s=28057#content

 

buy a new one man. Sounds like that motor needs a good LONG rest.