Steven, just wait a little longer and get an NSX with a clean title. Don't buy this salvaged NSX. Especially since you are in Hawaii. You can already add about $1000 to the price just to ship it back to Hawaii. Also, unlike the mainland owners, we don't have access to independent NSX mechanics or NSX specialty repair shops. Pfluegar Acura is our only source unless you really trust one of those Honda/Acura repair shops locally. Pfluegar did hire a good NSX tech who used to work in L.A. and he is the one that works on all the NSXs down here so that is a plus at least. Anyway, because we don't have too many repair choices, if you need major repairs on this Salvage car in the future it will cost you a lot more money. You will also be waiting at least a couple of weeks for NSX parts. Our dealer doesn't stock much of any NSX part. I wanted to get a simply oil filter for the NSX the other day and they had none in stock.
I don't recall what you said you can get this salvage NSX for, but Pfluegar themselves seem to always sell 91-92s for $29,995 asking price. It is posible to get a good NSX under $30K locally. If you broaden your search nationwide, for a higher miles 91-92 at $25K would be a much better choice than a salvaged one at $20K IMHO.
Also, what Island are you from? Deuce and I are on Oahu. Good luck on your NSX search. If you are on Oahu maybe you can meet up with the rest of us when you get your NSX.