My 1988 ('87 chassis) Jamboree 27' has a 460, carb. Fuel pump and gauge sending unit is one unit, inside the fuel tank. Bear to get to; gotta drop the tank. I replaced mine a couple years ago, most places wanted $200-$300, got it from Rockauto.com for $167, shipped to my door. Lots of different units available, though, depending on MH length, fuel tank size/location, generator pickup, etc. Best bet is to pull yours out and then match it up (Rockauto has picsof most). Mine was Airtex #E2060S.