If you have a built ls/vtec, go ahead and run that then. Why would you not want a hood on your car?? or a big ass cowl induction hood, its not a chevy. Make the car look stock, thats what I like. I would do a k20 rex if it were going to be a drag car, but if you put an ls/vtec making over 200whp in a crx, that thing will run 12s all day long. Your going to have traction problems in with both motors. I would just keep your mind focused on that ls/vtec. Play with that for awhile, and then, if you want more, then go that route. Dont waste all the time and money and start over. Remember the B motor is what made Honda known. Yea Ks are tight, 6 speed, 2L, cant go wrong. But in a Crx, strictly drag. Thats my 2 cents. Good luck with whatever you decide.

I dont know anything about the wiring.