go here for the ls/vtec numbers
http://www.importreview.com/d_1.8.html
go here for crvtec numbers
http://www.importreview.com/d_2.0.html
i don't really know much about the reliability for these motors. i do know that both of these motors are good motors for boosting, except that the b20 has to be resleeved cuz of weak internals. correct me if i'm wrong anyone.