I'm going to be purchasing a b16 longblock soon and rebuilding it. I'm trying to accomplish very high RPM/compression. I was just wondering if anyone here has an engine that runs in 5 digit rpm's for most of a course. I'm talking about one for race use only, not streetable at all. Also, if you don't think the b16 blockis a good idea, let me know what other's may have a more balanced stroke.