I had spoken to Ken the VP of Endless USA here in So. Cal, and he will be the one to approve of your sponsorship, than he will direct you to Rashie of ADR in No. Cal. I had spoken to both them, very nice people, specially Ken.
I have not talk to them for a while, because I do not think their sponsorship on Endless is a good deal, but Rashie had a good relationship with Work Wheels, he can get great pricing on them. Ordering them will take too long for me. Therefore, I have not taken advantage of either the Endless or Work wheels sponsorship they had granted me.
Good Luck