I have a decent one of these seats.  It would just bolt in place of your rear
seat without much modifications (you just need to drill a few holes in the
body and mount it with bolts and nuts).  The seat is from an '84 Wolfsburg.
It is full width and has blue courdory material.  The material should be
redone but the cushioning is good.  I don't have the engine cushion either,
but you could get one at a local upholstry shop.  I would like $50 for it and
for you to come and get it.  I am in Southern New Jersey (Millville, O8332)

Thanks,
Ken Wilford
John 3:16
www.vanagain.com
Phone: (856)-765-1583
Fax: (856)-327-2242