Welcome to iRV2. We are glad you joined us. I am a happy Workhorse Chassis Owner but have never had to look for the center caps or the lognut covers so I can't help you. I would suggest you post your question on the Workhorse Chassis Forum HERE
I am sure you will receive some answers.
Don & Bev Morgan Weyauwega WI, 05 Itasca Horizon 40KD, 400 HP Cummins, Delorme GPS LT 40, Toad 07 Saturn Vue AWD, Air Force One, TST 510 TPMS, Mayor of Weyauwega 2007 - 2013, Waupaca Co Board Supervisor 2010 - 2014