Helpful things to know. Take your car to a body shop you trust. I have my own guy in Titusville FL who can do it all, and does it right.Find every single receipt on every mod you did, especially the ones in the last 3 months. The insurance company, if they total the car will give you credit for those. Any aftermarket that stays with the car can be credited back to you. I beaing the cheap sob I am, actually got credit for the audio equipment I'd put in, and I ripped it out of the car. Also stole my hood ornament from my beloved Town Car. I miss my baby. But, back to my point, if you find a good shop, if there was no frame damage, try to get the car fixed. It may sound risky, but the frame is the only real worry, after that, things are fixable. I had been T-boned in my 99 Cutlass by a guy doing 45. He hit the side of the engine wall. Did about 7k in damage to the car. I had to go back to get a couple of things fixed, but the car's as good as new now. I actually can't find when driving it, any hint that it had seen a major hit like it had. Curtis Auto Body fixed it right. Looking at the outside, you can't tell anything ever happend, and certainly can't tell the front passenger door, and rf quarter panel aren't original. See what the body man and the insurance says though. If he looks at the car and says, "That thing's fu**ed, no questions." like he said about the car that hit me. And that little Grand Am was a ruin. If he says, "I can fix it, prolly take 3 weeks," like he said on mine, dance for joy.
Good luck either way. And use your aftermarket to inflate the price. Then strip whatever's not bolted down, and as many things that you can that are.
