You have a 90 CRX so that means you have a Cable Tranny, If you do decide to get the B16 with the Hydrolic tranny you would have to get the Hasport Cable to Hydrolic conversion kit. You do know that make that Engine with a cable tranny rigth? http://hmotorsonline.com/shop/sc2000...age&item=30002 That one would be better and its a direct bolt on. Or you can always go with an LS which would be better to boost than the b16 IMO. And theres always the ZC motor which would also be good for boosting. There are many options its up to you to decide what you want