You have the original buckets in that Duster don't you Richard?
Have you considered riding out the summer (pun intended) and have the originals reworked over the winter with more side bolsters added and re-upholstered?
That car of yours is pretty spotless and IMO would look better keeping the originals. But that's just me.
Are you going to the Gilmore (Mopars at the Red Barn) this year?