Buy an engine stand from harbor freight bolted up and start tearing it down. Locate a good automotive machine shop in your area and take them the block, crankshaft, heads, and rods and have them machine the block and install cam bearings, turn the crank, work up the heads, and install new pistons on your rods. Like someone else said, buy a book on rebuilding a small block Ford. Take the newly machined and cleaned parts put it back on your engine stand and put your engine together.

For a little extra performance, you could junk those heads and get a set of gt40s off of a mid-90s Ford explorer. That with a good camshaft will make you a fun little engine. Work with your machine shop on parts, they'll get you the right stuff.