I built a motor years back with their ported cyls, head, intake, carbs, exhaust, the whole nine yards. Everything they recommended. Granted, a motor is only gonna run as good as the tuner but it wasn't the best performing motor I've seen by a fair amount. And the customer service more then sucked. I wouldn't go across the street to buy oil from them. But that's just me.
So cal? HJR if your wanting to stay local.
SP