Need Opinion on Pontiac Formula Survivor

[daleone3]

Hey Everyone,
Need a thought on this if you don't mind.
Pursuing this car and speaking to the dealer this week.
https://www.southcarmotorsports.com/...irebird/c2505/
The claim is very low mileage (under 8k) survivor with a very detailed description by the seller. It appears to be as claimed however I am having trouble with the undercarriage pics though would be addressable. Dealer claims to know the car for years and the story seems reasonable.
Hagerty has it higher than what he will take for the car but the car appears to have been stored in some environment that caused front and rear end components to get rustier than I would expect.
Looking for opinions on originality and value.
Also, what does one expect in terms of cost for an "undercarriage restoration? Would you tackle on your own and how would you go about it?
I really appreciate any inputs, there are some good undercarriage pics in the ad.
The car was rustproofed so floors look good, mostly suspension that looks like it would need a freshen up.
Thank you !