I am building a rig from the ground up and using a Willys Jeep Truck (1950) as the platform.  Im thinking of building a tube style frame and would like your advice on what the "PERFECT" wheelbase would be.  I would really appreciate any input or advice that can be given, Thank You.
 sciracer8501@yahoo.com  

It really depends on the tire size and the kind of off-roading you plan to do with the truck. There is no magic length really. But here is a breakdown of what I try and run for all around off-roading (unless you plan to run low lifts and really cut fenders):

31-32.......80-90 inches
33s............mid 90 (stock length Wranglers)
35s............high 90s
37..............single digit 100s
38-40........110 or so
42-44........115-120
44 plus.......120 up.