Mate from all the things you just said about that NSX plus 15years old I think I would drop it, it's better to get S2K, with few mods it's gonna look very nice and will go very good.

Your hight could be a problem, 350Z is good as well but there is few of them around, BMW M3 (E36) could be affordable for around $40000, that's rare and very good in any way (looks, performance ect)