I purchased a 1996 T-2053 very recently and I have the owner's manual with it.
As mentioned by Nana, it really is a collection of brochures and generalized manuals of the components used in the individual travel trailer. That said, in any given year/era most will have mostly the same appliances and models of same with some upgrade options.
Again, as Nana said, looking at the brochures of Sunline in the appropriate year will help in determination of what models of appliances to research.
I will scan and link a photo of my Sunline check list early next week and you most likely have the same items as there isn't much deference between the 1996 T-2053 and T-2053 other then the bedroom layout, I believe.
Would like to see pictures of your trailer.
Welcome to the forum!
TT:1983 Sunline T-1550
TT:1996 Sunline T-2053
TV:2005 Toyota Tundra Double Cab 2UZ-FE i-Force 4.7 L DOHC (MFI) V8 4WD SR5 Automatic
P3 break control
"I know a lot about nothing and nothing about a lot"