UnderBody and Framework Recommendations
 

I hope everyone is doing well. I am new to this community and am currently working on my first rebuild project with a 2013 G37 Convertible Base. I bought it at auction and it just passed the IL salvage inspection. I have 2 major concerns

-Vehicle was involved in an incident affecting the Drivers' Side undercarriage. The floor was cracked on on the driver's side and was spot welded poorly. It currently needs a solid reweld and undercoating.
-Vehicle sags on the entire driver's side by 1 1/4 inches. It is not a suspension issue. Auto collision center claims that it needs framework done quote "Need bench press machine to pull out frame". I don't exactly understand and am unsure of the real issue.

I am asking for help from anyone who has advice or can recommend me to someone. I would likely prefer to have someone in the midwest so I can bring the vehicle. If elsewhere, if that is my only hopes, I will be glad to travel. Thank you all in advance.
https://cimg7.ibsrv.net/gimg/www.myg...57ab58ebdf.jpg
https://cimg0.ibsrv.net/gimg/www.myg...fc137a0cb0.jpg
https://cimg3.ibsrv.net/gimg/www.myg...4e36b62d96.jpg
https://cimg4.ibsrv.net/gimg/www.myg...6f845541cf.jpg
Passenger's Side
https://cimg6.ibsrv.net/gimg/www.myg...d0fab379ca.jpg
Driver's Side

https://cimg7.ibsrv.net/gimg/www.myg...b2c6051f6e.jpg
Driver's Side

If you're having to pull frame it will never be factory straight but can be close. Make sure you get underside sprayed with rust stabilizer and undercoating AFTER you verified frame is trued.

This just means that they have to put it on a frame machine (bench) and pull the unibody in different directions to straighten it out..the structural reinforcements have to be done at that time or after that and repair work should be done after that too...it may take a few rounds of measuring and tweaking to get right...probably just got rushed and went out when it was close enough the first time