That ad/article has popped up on planet isuzoo before. Tad found it last time. I think that this is for the same VX, it just didn't sell, and he raced it again this year (2005).

The transmission (and transfer case?) is from Holinger -they make aftermarket units for performance vehicles.

The guy seems super-smart on Isuzus. Apparantly this VX (and his Jackaroo) are Motec-controlled 300whp beasts.