Colton Eichelberger is driving Grave Digger #25, and Randy Brown is driving Grave Digger #29. Here's an updated list of Digger drivers/trucks just so everyone knows...
Grave Digger #23 - Carl Van Horn
Grave Digger #24 - Chad Tingler
Grave Digger #25 - Colton Eichelberger
Grave Digger #26 - Jon Zimmer
Grave Digger #27 - Charlie Pauken
Grave Digger #28 - Pablo Huffaker
Grave Digger #29 - Randy Brown
Grave Digger #30 - Dennis Anderson
I still have to get in contact with Gary Porter about what his plans are for 2015, but as far as I know, he's not driving a Grave Digger for 2015. And I know for a fact that Whit Tarlton won't be driving Monster Mutt for 2015, either.
Well, as it is with some other promoters, they would only look for the trucks that are more profitable or more popular on a team. Maybe they will eventually announce Park Patrol running with them, but if they only have one announced, then more than likely they're just sticking with Quad Chaos for the sake of popularity. Plus, it's cheaper on the promoter and team to travel with just one truck. Saves them some major MPGs.