...There are plenty of reinforced stock and early model MP MEGAblocks than have split cylinder walls. Making the mains survive is only half the battle. A simple cast ductile iron cap, (what about a high-grade PM?) doweled (maybe only one) USING 9/16" fasteners with good registering would work at these lower power levels 800-1100 HP and shouldn't be inferior in any way to the existing World block IMO. Any cross bolting, splaying, adding addl. fasteners, etc... add to cost and are not nec. IMO. Again if there were a way to utilize a BBC-style oil pan (unskirted block) it would keep YOUR costs down while not compromising demand. This feature may actually improve demand. LOW-deck!!!