Hate to dig up old bones !!!! BUT, I just happen to have a good 250 block and a set of Howard 283 rods and a 292 crank. This sounds like it would work. Has anyone done this yet??? If not I think I will give it a shot...Want cost much, I already have the bearings. I just need some 307 pistons and a set of rings. The machine work will be free. SCRAP
