Anybody running ssm3 /3a on boxes on a scarab kv with 3" prop shaft to running surface ? I am going to use cmi elbow top (removable) 4.5" dry pipe exhaust . The boat has custom race hatches not the factory race hatch ,what fitment issues have you guys experienced with this setup ? also the motors have 250 superchargers with chillers .[ATTACH=CONFIG]540746[/ATTACH]

I ran mine without boxes but a botched transom on my Excalibur at 3" below, with 17" diameter props it walked on plane like a cruiser.