I got rear ended, which bumper do I go with???

Damn Floridians, 5mph rear tap, dented my chrome and barely missed the sensors. I have a 05' CC Titan 2wd with Big Tow (It has 3.36 gears, cooler, hitch, harness, etc).

My question is which bumper? I've been told there IS a difference between the towing and big towing bumpers. I'm looking on craigslist and found a regular towing bumper, will this work with the BT package?

My research got me here --->"This rear bumper assembly has the regular reinforcement bar assembled to the bumper. If you have tow package you will need to remove the rebar and install your factory hitch bar to keep the towing package." WTH does that mean???

I just want my chrome bumper, with sensors, and can still use my original BT package.

Please advise...