[Jack21]

Summit has a tech article (Strokers Wild) detailing a build up of just auch an engine. Jegs has some tech specs on Kasse heads for big SBF's. Muscle Mustangs & Fast Fords had a head shoot out using a Windsor stroker for a dyno mule. All are making numbers you describe.

'68 & '69 blocks are strong, but about .020 shorter than '70 - up blocks. You might have to skin the pistons. We usually recommend '74 or earlier blocks because of strength, and to minimize registration hassles over emissions.

'75 - up blocks I'm not sure of as the exact year blocks began getting thinner.

The Ford Racing sportsman block is reasonably priced in machine work it doesn't need over a seasoned production block if registration is not an issue.

Free parts, eh? Hmmm! Might be time to test Kasse canted valve Windsor heads, and Aussie Cleveland C3V heads from CHI.