Mopar guys are weird, all the other makes are wanting taller blocks to handle the big stroke cranks while we do our darmness to go shorter! Back in the 80s a good friend had a Ford 429 Shotgun pushed out to 588 cubes, 4.3/4 crank and 4.7/16 bore built by Jack Roush. Pistons came up out of deck and had 5/16 aluminum spacers between head and block, very short piston-rod. Eventually the angle was to much and a rod came out, Made 830 hp (1982) with similar deck height of a 383. Slide that 383 to the side and use a high deck block.