I don't have any information on what other front axle might have been used on the Roadmaster chassis. I would say that there are others out there without the Dana Spicer front axle or it wouldn't be called out like this. I saw the review on our site from 2012 so I reached out to my contact at Roadmaster to clarify.
According to their tech notes the # RM-RBK6-RSSA and their other stabilizers will not work with the Dana Spicer. I'm not sure if that information was old and updated since... view full answer...