yes bartamos - there does appear to have been 2 profiles of door seal used, but of dozens of trucks I've only seen the round one a couple times, one of them being on a 57 panel I had, and the "flat" seal worked fine on it - that's the only one I've used on 5 trucks and it works
profile of it is like
this , shown for the panel back doors, the expensive one - if you click into the specific model on Steeles site [bottom of general list] it's the only one listed for 57 .... they useta have profile pics for it but I see they've changed their site - their paper catalog is better
Bill
