I decided to go with the b20/vtec project. I wont be doing it till the end of the year but will drive with the complete b20 for now. I just ordered a 98 b20b longblock from hmotorsonline and my questions are the guy said that I could not use my obd2 ls ecu because there isnt a crank sensor and that I should go with a older ecu and use a harness adapter thing???? Should I add a crank sensor or go with a older ecu? And what is the rev limit on the b20? Thanx people!!!