I had a rusted out 69 Boss 302 and a good 70 Fast Back Mustang body, I was building a Boss 302 clone. I striped all of the usable parts off of the Boss 302 and sc***** the rest. Here is what I have.
70 rust free F.B. body (new inner and outer quarter panels, new floor pan front to rear) 69 L door R Door is a 70, 69 Fenders, 69 Boss front nose, deck lid, end caps. New Hood, 70 Disk brakes & Boss shock towers (not installed yet) 9" rear end (not Boss) low back 69 front seats, all original glass, tail lights and miss, parts.
Fresh 70 Boss std bore block, fresh 70 Boss 302 heads, fresh Boss crank. Rods, pistons, 69 Boss intake manifold, 69 Boss 302 Clear Title, 70 Mustang 351 Clear Title. It needs finished but the price is low enough $11,500 for everything.