You can accuse me of being guilty of ignoring your question, but:
I've had my NSX for 10 years now (happy anniversary to me) and I have made a few modifications such as lowering springs, air intake, headers, exhaust, wheels and tires and a few other things.
For the last few years I've been undoing a lot of them. The car is now back to stock ride height, stock intake, and probably about to go back to stock exhaust since I am on my second Comptech exhaust which apparently has also failed. The headers cracked and had to be repaired - if they fail again it's back to the Honda manifolds for me. If I had to do it all over again, I would have just bought the wheels and tires (made-to-order Kinesis K20 in 17" and 18") and called it a day. I fully admit the only reason I did the wheels was cosmetic, but I still stand by that decision. They look great
I guess what I'm saying is, why not save your money and enjoy this great car for what it is. That $1500 might best be put into an emergency repair fund for when something breaks.
Again, I know I didn't answer your question but perhaps I've given you something to think about.
Brad