Yeah, that's not bad work at all. Not really 'high-polygon' these days, but still. Descent 2 has problems with them past a certain point, as I'm sure you are aware.
Incidentally, my level 'Moss Clutch' (which is on Stealth's website... http://www.stealthshangar.com/hotspot.html) also has a custom ship, but it's much more wacky than that.