Failing capacitors at the gauge cluster of the NSX is a serious topic. First signs are a non-accurate speed indication or a permanently lit brake light warning even though bulbs and wiring are OK. The leaking acid near the warning indicator circuit can cause a short and even potentially lead...
Looking for the following:
a set of billet main bearing caps, new or used
Piston / Rods, new or used, OEM or aftermarket
Torque plates which bolt onto the block for boring / honing. New or used.
Let me know what you have!