Mushrooms, weed, and Cypress Hill?!?! Sounds like a typical lunch here in Boulder!! Fishing for 4wheelers sounds fun though... What fly do they go for?
I did not do GOX III but took a completely standard 4x4 stick shift X (only 5000 on the clock)on every single trail run during GOX II. The X suffered no damage but a few scrpes on the undercaraige, but its a 4x4 - so what. I used the original General tyres and possibly had them a bit too hard as they lost small chunks here and there.
The secret to trails like GOX is to take your time. It is not a race, enjoy the scenery along the way and you should not damage anything not meant to be scaped etc, afterall, it is a 4x4.
-------------------------------------------- "Life is an Adventure to be lived"