I have a b16a gen. 2 swap in my del sol. My buddy runs a b18b in a civic completely built and bored and runs low 13's. I run high 13's. If you want a b18b and you want speed, my advice would be to rebuild it and get it honed. I love b16a and b18c but that is just my preference. it also depends on whether you want to boost or not.