1972 specs???

[wade]

hi guys, several questions and things regarding my 72 gmc 1500
first off, is there any place on the web that you can download or get info that is in the owners manual, i don't have one and am having a hard time tracking one down.

the things i need to know are

-what is the standard behind the seat fuel tank capacity, gallons
or litres is fine.
-what would the ball park towing capacity be on the 1/2 ton
with the 350 v8 and thm350 transmission? i have the 1500 super
custom truck with leaf springs, and a steel step bumper in back--
- lastly, iam still in the market to find a fuel sender unit for the 72
any pointers as to where to find one, or if anyone has one they would like to sell, that would be great.
-ok this is for sure the last one, i have been told that a tilt steering assembly from any later model chev/gm van would fit in the 67-72 trucks as they [the vans] didnt go to column ignitions until around 1980, any truth to this? and if so what if any modifying is there?