I guess it depends on your definition of "rat rod".
To me a rat rod is an old car with a bunch of totally unrelated parts thrown together with bird **** welds, skulls and red wheels. No consideration to quality of the work or safety of the occupants or people that happen to be on the road at the same time. The driver is some sort of poser wannbe dressed in 50's style with greased hair.
To others, the "rat rod" definition is any car that looks a little bit like it's not stock.
A lot of the cars you will see on this forum are not quite stock... ranging from Stormer's great looking Imperial to Mr C's stock black formals.... and everywhere in between. You won't see what I define as "rat rod"... but a black primered Chrysler might just fit your definition.
I think most of the cars you see here are stock with some updates to improve performance and drivability. Some mods are done to personalize their rides too like maybe a little paint or interior work.