Welcome John51. Good to see another old Prowler.
Ours is an '84 "E" 19ft model. Some styling/placement differences, but basically same.
Trust me, you won't find any manuals out there on these. You might find a manual on the older Terry models, as they all use same appliances. You're also gonna find that pretty much appliance parts for this age is also discontinued, so used will be only way on finding original looking parts, if you stay this route.
Del & Jerre w/Isis our English Bull Terrier
The Cougar's Den
1984 Fleetwood Prowler "E"