Is it $500 for labor and parts or just parts?
Is there any evidence of the tms reinforcement kit actually helping?
The kit is $150. I bought it already.
I have a friend whose dad owns a bodyshop. I think if I remove as much as I can myself and then bring to the shop for the heavy work and welding. The total cost can be within $500.
I am sure one of your friends has some connection to a mechanic. Time to kiss some ass.
I believe the kit cures the problem. I never seen a report of sub frame cracking again after the reinforcement.
It's just a matter of metal thickness and weight distribution, doesn't take a physics degree to prove it actually works.