Hi guys, not full bottle on all the offshore race scene but having a go at least located in Australia so info is scarce. Twin bbc 454 run out to 602ci with mercruiser bellhousing to daytona crash box through to shaft running drive to ssmiv with tr top box. 750hp 6000rpm and want to change the crash boxes to meshable forward reverse boxes.

Has anyone had boxes to stand up to the punishment. Iv heard of Bam marine. Im hoping to be able to keep the belhousing change the box and shorten the shaft if need be.

Any info on make model numbers and pics of any ideas would be great.. cheers matt