I don't think that can be right. Red Dragon (truck in the background) wasn't even built yet, it didn't come out till a couple years after BF17. Also...nigel didn't get his f150 bodies until bigfoot sent them for the new truck. He was running a toyota body on his Wild Child truck at the time bf17 was being built. More likely than not its the Monsterous truck (bf17 clone and teammate) with a different body...or even bf17 with a different body.
That truck was Monstrous, former team truck to Bigfoot #17. It was sold a couple of years ago and is now called Crusher. It is identical to Bigfoot #17 all bar the engine. This is their website http://www.crushermonstertruck.com/
Just to be clear as the truck builder and owner prior to its sale.
The truck pictured was formerly known as Hulk then Monstrous was sold late in 2007 to Lewis cook who re-branded it as Crusher. As far as I know it only ran at a couple of events. many rumours but no sittings for quite some time.