Paul,

I can think of several different solutions to your problem:

1- The later model removable jumpseats form the Carat and Wolfsburg Editions
that have already been mentioned.

2- Single captain's seat w/ storage box and seat belts.

3- Front 2-seat bench which was used mostly in Single Cabs, Double cabs and
some vans. You lose your walkthru space normally between the front seats w/
these.

4- Use an aftermarket folding seat. Bus Depot had one of these for sale.

The first three are listed in order of their difficulty to obtain in the US.
I believe listee Chris Turner had a front bench for sale.

BenT
San Francisco