Running an atmo vented catch can that will have a drain back to the sump.
Personally, I'd prefer to spend the 1100 odd $$ on a proven design ala High Energy Pro-circuit. I've seen some of the dodgy modded sumps around and they really don't look very nice. That being said, if anyone can find a sump that will fit an RB30'd R32GTSt that is of the same quality as the High Energy items and comes with baffles and 4 gates, please let me know
P.S. and I don't mean gates made out of door hinges!