i dont think iv seen a picture of a storm with a port for the booster , perhaps the extra airflow would cause moisture issues in the tank ,or it could be just the way he wants to market it ... like its already the most powerfull machine etc
for Diy ... I would seperate one of the two exhaust hoses , put a hose connector on it , then add the booster to that one motor exhaust when you want too ... that works great on the 6.6 enforcer , gives more powerful suction .