budget boost - b18b (low compression stock, like 9.2:1). but if you have money and a place to get some dyno time(vtec engine that are turbo are usually harder to tune than non-vtecs) the b18c1 would be better. I dont know where but i have heard that b18c5's actually have thinner cylender walls. if you want a good list of motors and decent prices check out www.hmotorsonline.com