crashed car.......questions on repairs

Well, i crashed my baby. 5 miles from my house too. I lost control going into a turn. There was a little hump going into it, and i guess i lost it on that. I ended up on a steep hill of lava rocks. When i hit the hill it pushed up the bumper and radiator, and banged up the front fenders. What i cant figure out though is why the rear bumper and fenders are are banged up. Somehow the rear panel got dented really bad, and the bumper got bent up in one spot in a little arch like it landed on something. But there was nothing in the area that could have damaged the rear. The only engine problem that i could see was the radiator. Other than that i think its driveable. I just have to have the insurance guy come look at it and decide if it's totalled or not. If he says its not, then i'll have a body shop do all the work. But if it's "totalled" then i'll take the money and do the work myself.
I have some questions though. Are body kit bumpers full bumpers?? or would i need the stock bumpers with it. Cause since i need new bumpers might as well get nice ones, if i end up doing the work. Also, this question doesnt relate to the accident, but does anyone know how to bypass the sensor thing that goes into the catalytic converter???

that sucks. i don't know if the kits are full bumpers or not. most likely they are only addons for the bumper ,but it depends on the kit. I don't think the insurance will let u keep the car. usually they take the car away because it either costs over the value of the car or the car was crashed so bad that won't be claimed as safe even after repairs.

if u really want cheap parts take a look at this
http://www.autobodypartsonline.com/cgi-bin/webc.cgi/st_main.html?catid=335&sid=77CBJv0HZ2mk4rS-24102104429.0f