Puget Sound Truck Sales of Pacific, Washington
Look at the peterbilt. It is a 6x6 and about 60,000 dollars. They also have several cabover fire truck style digger derrick trucks in 6x6 config for less money. But that Pete has the same rear axles as the M911. It is on 24" rear tires.
You can also see an Oshkosh 6x6 for sale at Chambers motors in Boring Oregon.
I looked at the Oshkosh a while back. It is a nice truck, but has been sitting on the lot for a few years now and needs a home or it will rot. It has a 4 speed aux trans and in the very low hole, you can get out, go to lunch, and it will have only moved a foot or two. It has been repowered with the 400 big cam 3.
They also have a Peterbilt 6x6 abd a few others, but the Pete would be a second choice past the Oshkosh and the other 6x6s on that lot are,.........well,...............whatever.
I think John Chambers advertises int he truckpaper as well and usually puts lots of good pictures in those ads.
Go to the speacials page at this site and look for item #1613 fior the Oshkosh. The other 6x6s are spread throughout the site o on truckpaper.
Chambers Motor CO.