Another option is to just ask the body shop of your choice if they're okay with substitutions. That's what I've done with both of my accidents. That way if more damage is discovered during repairs, it's covered and you end up making money instead of paying a deductible and you get to mod your car at the same time. The reason I say you make money is because all of the aftermarket parts I've added cost less than the OEM parts they're replacing. Plus, the insurance company will pay for parts to be replaced but you can opt to not replace the "damaged" (scratched) part and pocket the cost of the OEM replacement and labor.
I made over $2K cash last time I crashed my car plus I ended up:
*buying 4 barely used wheels and tires (to replace 2 that were damaged in the accident, ended up with 6 total, [all Enkei RP02/RT-615]). I paid $750 for the used set and was paid close to $2k for the price of 2 OEM wheels, 4 OEM tires (prorated for tread wear. I made them RTFM about replacing all 4 tires at once, only 2 were damaged), plus the cost of mounting and balancing.
*adding Kartboy front endlinks
*Free labor and (OEM coolant/OEM additive) to install new OEM radiator that I ordered online (old one had been seeping for a while but was not damaged in accident). They had to remove the stocker for front end repairs anyway...
*Free paint and installation of JDM knockoff grill
*Paid $100 to have modded headlight repaired but was paid over $300 for what an OEM would have cost
*Several parts were scratched but I opted to not replace them and take the cash (Crucial DP, Mr. Josh's rear solid endlink, etc.)
*Free labor for them to install Group N motor mounts (added the tranny mount myself later)
*Free loaner "car" (scariest car I've ever been in though)
*Other stuff I'm forgetting
And this is just from my most recent crash. I also have used accidents as an excuse to install KYB AGX struts and Eibach Springs (labor was free) and to repair minor pre-existing damage.
Funny thing is, I've always been 100% honest with the body shop and the insurance company...none of this was illegal and if it was,
I wasn't breaking the law AFAIK.
I suggest you show an extreme interest in the repairs. Try to make friends with the tech working on your car. Let him know your an enthusiast. Tell him you race your car at the track and it needs to be 100% straight and the alignment needs to be perfect. Check on your car a few times a week.
I won't recommend any of the local shops I've been to. I'm not happy with the paint job or the professionalism I experienced at any of them. I had to push and push and push the shops and the insurance company to have the job done right and even then, my car is like 3 shades of yellow now. Nobody seems to notice but me though and the insurance company gave me another $1700 because if it.
Oh yah, +1 for fuck Lithia! I hate those fuckers (except Jeremy, he's a good guy). Justin can die in a fire though.