Are you sure it's not a Freightliner Chassis, and not a Workhorse?
Yep, that's what I was going to ask. And, I was dead sure it had the Freightliner. But, I dug around and a bit and, found the brochure on their new coach. The standard chassis was a Freightliner with the CAT C-7 330HP and Allison MH3000 trans. But, in January of '04, Workhorse offered up as an option, on the 39' coaches, its chassis along with the Cummins ISC 8.3L 330HP and Allison MH3000.
So, the OP has a bit of a rare Journey, to say the least. I surely hope they enjoy it. The Journey, in many years, has been a great coach. I know several people that have one. All are very happy with them.
Scott