It looks like your 2004 Holiday Rambler Ambassador 36PST was built on a Roadmaster chassis. if the chassis is the Air Ride or Monaco model (except with Dana Spicer front axle) you would need to use steering stabilizer # RM-RBK6-RSSA. If it is a model with a straight axle with leaf spring suspension use # RM-RBK8-RSSA.
You can verify the chassis by providing the VIN number to Holliday Rambler. view full answer...
Actually our etrailer.com brand brake assemblies are rebranded AxleTek assemblies. So we have the 8k left and right assembly set # AKEBRK-8 which is most likely what you need but these are 12-1/4 inch in diameter by 3-3/8 inches wide and attach with a 4 bolt pattern. view full answer...