Here's a few past threads on the topic of larger tanks;
http://67-72chevytrucks.com/vboard/s...d.php?t=710400
http://67-72chevytrucks.com/vboard/s...d.php?t=665626
http://67-72chevytrucks.com/vboard/s...d.php?t=460763
A novel idea would be fitting long saddle tanks below deck b/n the rocker boxes and drive shaft, so a modern suv/pickup spare tire crank winch could be installed at the rear - would sure free up cargo space, getting that spare out of there
