Bought the covers from this place:
Search Results Page | usautoseatcover
As well as the seat portion of foam, back was not available.
Local shop did the work and beefed up the back with foam he had on hand. 2 years old and still good as day one but, I don't drive it too often but, it's my fishing vehicle so I have to drive a long way.
Only problem is I am way taller in the seat but my 5'9" head fits under the roof just fine.