You can have either b18b or b18a block for the LS/VTEC. The b18a is a from 90-93 tegs and I believe has a cable tranny. The b18b is from 94-2001 and has a hydro tranny. Any VTEC head can be used in the hybrid. If youre going turbo stay with the ls tranny otherwise youll want a gsr tranny. Also check http://www.ardperformance.com/store/shop.cgi/page=engines.html/SID=991513119.21863