Both of my 02s spin a Solas Concord, and both are 100% OEM/Stock. Just really, really well taken care of. Actually the XP has a brand new engine in it, and the GTX has only 42 hours on it. the '99 GTX has a new engine as well, but OEM prop. the Concord seems to improve hole-shot, hookup, and 1-2 on the top end... and I get them cheaper than the OEM prop. (and they look pretty lol).