Huhhhh, 12" instead of 6", eh...That explains the reaction I get whenever I pull my pants down saying "Mine's only 6 inches long"
(In bad taste, but I couldn't resist the window of opportunity there:laugh: )
Unfortunately they all have the high backs on them. The intro year of that model van was 84/85 and it's pretty much identical to my 86. But, you may be able fit another type of seat that has a lower back on to those pedastals. But if they are 12" tall it probably wouldn't work anyways.