the radiator should fit from a civic(same year) but it might take some special piping

--anyway, back to your originial Q----

if you want a complete power kill thats easy to do, they make large key'd switches, you can get them at Autozone or NAPA for less than 10 bucks, it'll be in the electrical isle-- just tap it on to your main positive lead off of your battery and voila!

complete on/off for your car--and btw, make sure you've memorized your code to your honda stereo