This information is actually more accurate to what people need as taxes, dealer fees, and all the other bull a dealership adds on can differ tremendously. OTD price is more misleading entirely.
MSRP compared to the price you pay for "just" the car is what people need to see so they can determine if it's a good deal..
OP, if MSRP is $43k and you are getting a listing at $36k, I would say that is a great deal! After all fees/taxes applied and you're under the MSRP of the car, you technically already have equity in it. Beware though, depreciation is REAL lol Stinger GTs and above are holding value pretty well and I think it will hold steady as more and more people learn about this car and the value it brings to the table.
For reference, I have a '20 GT RWD and I paid $35.7k for mine. MSRP is $41k. I'd say I got a deal as well. Pull the trigger