The window issue is the plastic clips that hold the glass break. A member here (SBC) makes metalk replacements.
We share a lot of driveline components with the Trooper RS. There are a few options for dif gears for the VX however they are becoming harder to find. A good source of parts and info is Independant 4x.

As far as triathlon, I have raced all over the west...Arizona, Cal, Utah, Texas, Idaho,...
I will be down in Coronado to race next weekend. Going to hopefully have a little get together Sat afternoon at Silver Strand beach if you want to check out a few VXs. Feel free to come on down and introduce yourself!