[A/S] Airstream vs. Silver Streak Construction/Weights/Skin?!

["sea2hill2005" <borjie@xxxxxxxxxxxxx>]

I was hoping someone could help answer this! I am looking at a '68 
20' Silver Streak Sabre trailer where the owner says it is made with 
a steel chassis and aluminum frame/skin and he had no idea how much 
it weighs. I was wondering how it differs in constuction compared to 
Airstream? I do know that Airstream sets the standard as far as 
being lightweight and being very well made, but that is the extent 
of my knowledge on the subject and how the two differed. I was 
hoping to be able to pull the 20' Silver Streak with my car that has 
a 3500 lb. weight limit. Also, do these polish up like Airstreams 
do? Any info. would be greatly appreciated, thanks!