fuck a b20vtec. i have only see 1 thats actually fast. put 11.7 in gutted crx. as for cronic saying it can rev out to 9-10k rpm id have do object to that. you probably can do it but i wouldnt recomend it. a b20 may have more hp and tq compared to a b18a/b but in my opinion you'll be much much more safer with ls-vtec.