Hey Mike;
my 97 Tropi-Cal National RV F53 460 chassis has the 5.13:1 gears, and the Dana 80, If you send me an email address, I can send you a photo of the actual tag on the axle. I have the 16" wheels.
Hope this helps let me know if you need more info. Regards
Marv
I want to thank everyone for all the help I received for helping me get my RV repaired. I found the right Dana 80 and gears and had it installed and got back on the road in 7 days.