There should be enough room for that setup. We chose left and right feed bodies to fit hoppers on their. When I get into the shop I'll double check... but I don't see an issue. The golden gun we raffled off had dual stock class feeds but they were mikes new aluminum one piece feeds.
Any one can make it shoot faster... but its more fun to make it a pump!
Machinist and R&D for Gearheadz PB