Personally, I think you'd get a retard to get either of those cars at this stage in your life.

First of all, don't even CONSIDER financing a CAR for 72 months!!!!!!! Also, don't consider financing a CAR with a signature loan if you're going to have a 9% interest rate or potentially higher. NFCU is a great credit union, but if you're going to spend $20-30k on a car, why not buy something brand new and get better rates on top of owning a brand new car? Why not a TL Type S or something? That's what I've considered lately, and I've never wanted to buy a Honda or Acura before--ever! It seems to be a pretty well rounded car that can fit into a modest luxury category in some cases, and can be sporty too. It has a somewhat reasonable pricetag if you buy new or lightly used at a dealership, and it has a lot of creature comforts that a stupid S2000 or NSX probably wouldn't have.

Here's my point: If you'd rather throw money away on a car, why buy an old car like that with bad terms and rates? If it's to impress other people (and be honest... that's a majority of the reason why you would buy an NSX!!!), you should re-evaluate your priorities and concerns.