Thanks. I spent some more time searching and found a post by SteedaBrandon that answers the question. The Steedas are progressive.
Here's the original post...
Originally Posted by SteedaBrandon
Not sure if you are referring to the one that I posted. If so, then yes. I can assure you that that car at the time I took the picture had our springs installed. I can show you a before picture if you'd like?
They are progressive.
2012 SEL 5 door w/Premium Package - April 2011 | 1957 Chevrolet 3200 - 2005
2000 F150 Sport 2000-2011 | 1988 Ranger XLT 4wd 1988 - 2000 | 1966 Mustang 1983 - 2008 | 1963 Ford Econoline Van 1979 - 1983