I have spent quite some time looking through the 2012 Post Apocalypse/Zombie Hunter Community Build forum. It's not something I can really join in, with me being in Australia. I'm happy enough to share my progress either here or there though, depending on which the community prefers.
In the mean time, here's the start of my build. Extended frame, and air bag suspension. For the air bags, I used some vibration mounts from something like a CDRom player. Exact details escape me as I've pulled hundreds of things apart and kept the interesting bits.