There is the phrase “if you have to ask, you can’t afford it.”
Well, technically you can at that salary. If I were in your situation, I would be maxing that 401k and working that Roth in order to reduce the taxes instead of looking at such a new toy.
Assuming you have all the space for the toys, that’s a lot of scratch for a vehicle you would be hardly driving. Would you be riding a lot less after getting the is-f? Would you even be tracking it?
You can spend a lot less cash on an older toy car if you are hardly putting miles on it. Most of the depreciation would already hit and you can squeeze out a lot more years at the low mileage you drive. There are a lot of reliable options out there. You can get a cheaper Porsche 996, a couple year old Lexus sc, an Infiniti g37 coupe, a German roadster (z4, slk).