Gearing an ERBE for racing on 4s

Shaun, was that comment directed at me? I'm assuming not since I am running a Tekin T8 and will be getting TP batts, but thought I'd check. It just makes gearing way easier and should help keep my mind at ease... My only concern would be if it's legal to run 6s at my track... they're ROAR compliant. No biggy on the club stuff, but for big sanctioned races, the 6s would be a no go.