Figured I might as well get around to putting pics up in here.
Started off with an AK Rocker 100, some steel in various shapes and sizes, and a bunch of PVC and ended up with this.
The seat is stabilized by 4 2" diameter pvc feet to keep it from rocking. Since packing the AK Rocker full of foam padding it is comfortable for basically as long as I want it to be.
The frame that the pedals are attached to is 1" pvc reinforced by 90 degree bend steel to keep it from flexing. The angle of the pedals is adjustable as is the distance of the pedals. The entire rack that holds the wheel and pedals completely detaches from the chair. Designed it to do this thinking it would save storage space while keeping it easy to setup but I honestly never take it apart, I just scoot it into an adjacent room when not using it.
The surround sound speakers mounted on the chair run to RCA leads that are right next to my PS3 which in turn run to my receiver. One RCA each for LR, RR, and center (which is what is in the seat in the pics). Total setup time is seriously two minutes.
The paddles on the DFGT are DIY and really take the wheel to the next level. The only thing I wish it had now are the pedals from a G25/27.
I paid $20 USD for the AK Rocker off Craigslist and the rest of PVC and steel/whatnot probably cost an additional $70ish USD. I've rebuilt/designed it so many times I'm not sure on the actual cost.
We'll see how long this one lives considering I'm really wanting to build a frame from 2" PVC, pulling a seat out of a Subaru Impreza, and inverting my DFGT pedals (already know how I want to do it but its going to have to wait until I build a new cockpit).
If you want pictures of something specifically or want something explained in a more coherent manner, let me know, I'll see what I can do.
Edit: The surround sound speakers are a new addition and so yet haven't gotten a wire wrap treatment. They are awesome but I think I'm going to ditch them and go with a surround sound headset though.