Hi Danial,
I ordered the fenders from Buggy Depot:
http://www.**********.com/product/50...-yerf-dog.html
I think they are worth the money, seeing that I'm constantly pelted in the face with mud and rocks.
Good luck on the Spiderbox project. I'd love to see some pictures. I've done some huge structural updates over the past week to the frame. The entire front end is welded up, adding a number of steel support bits. I'll post pictures once I get it cleaned up a bit.
Cheers!