Works bell has what you're looking for. They have both the short hub (used in conjunction with or without the quick release) and the regular boss. I called them up not too long ago and they should have it. Call up Aspec they will have one for sure.

Hey, thanx for posting this. You actually helped me find one in a jam ASAP. Aspec are the only guys that have this IN STOCK in the us. Everyone else is 4 weeks from Japan.

Thanx!