2007 QC 2500 2wd 6 speed 5.9

I need some help determining the value of my truck. A tornado came through and has dented every panel except the drivers side rear door. Insurance wants to total it but hasn’t payed yet. I feel it’s worth more than they are offering me. It has 183k miles and I’m the original owner. I’ve done some work to it like lift kit and air bags and removed stock exhaust. I put a dual disc in it about 25k miles ago. I change oil every 5k myself and know this truck inside and out. I could use some help with comps and value.

 

It's 2WD... Hurts value big time. Regardless $10-15k. What is bluebook? What are they offering? What is the repair cost: 3 estimates?

A good insurance company can be arm wrestled into "fix it". However parts need to be available.

And dented... So what: it's a pickup. Any dents need to be fixed aside of Vanity? Cash the check and keep the truck as a beater.