CA rear end accident , Not at fault. Have a Question

[Akito86]

Advice appreciated.
I recently was in a left side rear end collision on my FRS
Was not at fault, was stop at a turning light, moron on the phone hits my rear bumper , beam bar damaged, left side seems 1/2 inch lower than right side.

I do have Tein aftermarket suspension and voltex tail lights as well as invidia dual exhaust.

I've read on ft86 forum the guys have easily found shops that will use aftermarket parts , no problem than OEM.

Has anyone experience that here in socal or recommends me a shop that will get me the replacement aftermarket parts I had that were damaged??

And a per say extra question:
If the insurance for some reason "totaled" my FRS Which I have a lienholder (bank $14,000) But I want to keep the car and fix it myself , will they write a check for the kbb value (22,000) of FRS in my area, pay the bank or will or can they write the check to my name,
= I pay my loan-keep my FRS credit score good still, left over to repair the car.