This isn't for a 1978, but I wanted to get your opinion... here's a 1973 that's 20' that's listed for $7,500. Seems like a lot has been done to it and it's in pretty decent condition, but still some things I could do to make it my own and a couple things that do need to get done yet, but nothing like tearing out the inside.
1973' Argosy 20' —*$7,500
Here's what the seller says has been done:
New Dometic, 13,500 BTU roof mount AC
New propane set up, tank dial regulator and all new copper and rubber lines throughout.
New OEM(last one Inland RV had) water tank
New valves and connections
New Shurlow whisper soft water pump
New Pex plumbing throughout
New propane hot water heater
New Optimus RV battery
New wiring to electricals
New Boondocker charger / converter
New 12 V blade fuse panel and much new wiring.
New 6 ply tires and modular wheels
New Valtera grey/black dump valve
New Black tank plumbing
New Black tank
New Dometic Sealand Traveler toilet
New kitchen counter top
PO repainted stove and sink
New Dometic propane/110 elect refrig
New plank floating floor(all soft spots in subfloor were replaced
Some lights have been changed to LED
New interior prime and paint
All new foam and upholstery on gaucho and front booth
New mini blinds
New 30 Amp 110 shore line
Here's what the seller says should still be done:
Front roof vent needs to be replaced with air max or similar powered fan/vent
The load leveler hitch that comes with it will need to be adjusted( I have towed it with just a regular 2” ball hitch on my Toyota Tacoma Pickup)
Rear tail/turns need to be rebuilt or replaced.
Curtains are need for front wrap windows
One new Airstream BAL jack is needed(the other 3 work fine)
There is no sun awning but one could be added
Counter back splash/wall needs a covering for aesthetics
Sliding door between bath and the trailer needs to be maintained
The trailer came from Oklahoma and there are some pea size dents on the upper rear, street side of the trailer. (I would ignore them) The exterior is way better than average in paint condition but a new paint job in the future(pearlescent white) would be an improvement.
You absolutely need to build or buy a protective cover for the front Panoramic wrap windows for when you are driving(these are unique to the Argosy). My Minuet(the next project) was missing the streetside wrap when I got it. It took me 6 months to find one $600…about average. An Airstream replacement(not exact) is about +- $1000 with shipping.