440 source???

got plenty of early 400 blocks here.all 71 vintage 230 blocks with 9 being the 1.350 webbing and 7 being the 230 .575 webbing. have 9 72 630 400 engines.5 530 castings. 30 400s total, im a pack rat,lol heard some porosity issues with the 440 source kits and whacked journals.also heard different seat heights on the heads. have everything miked out and magnafluxed as you would any engine. This was from a pro mopar builder with 29 years exp. building exclusively mopar engines from daily drivers to top fuel.