Try Japanese Engine of atlanta. I got a sohc ZC from them and im very happy. Ive been back there a few times with friends. The owner is Mike Han. I got the zc for something like 475$ or 500$ and thats including a 6 month warranty on all internal parts.

Japanese Engine of Atlanta
1649 Sands pl Se # H
Marietta, GA 30067
(770) 953-3425