I built a set of front and a set of rear bike racks for an 84 GL that I had.
Each would hold 2 bikes.  They had vertical square channels that stayed
bolted to the bumper mounts in the rear and the frame in the front (through
the bumper in both cases).  I then bolted Thule rail type bike holders on to
more square tubing that slid onto the parts that were attached to the bus.
We would pull up to a bike trail, dismount the bikes, pull some pins and
store the racks in the bus.  Total on & off for all 4 bikes & racks was only
about 5 - 10 minutes.  I had zero trouble with headlights or cooling too.

I would love to sell these racks.  I have pictures that I can e-mail showing
them.  I spent over $600 building them (Thule rails are over $100.00 each [4
of them]), and would like $250.00 plus shipping for the entire set.  A few
new bolts may be required.

Please p-mail me if interested.

Walt Spak
Pittsburgh, PA.
wnsopc3@3rdm.net