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to the board....
I agree with everything Geoff said and there is plenty to read on here.
As far as the gas in the oil, the Quadrajet carbs are known for leaking gas from plugs in the base of the carb. This gas runs through the engine and ends up in the oil pan. Change the oil & filter and rebuild or replace the carb and I bet you won't have any more problem with gas in the oil.
Repair or replace one thing at a time starting with the safety items. If the bed is solid I would consider fixing it. Too many people make the mistake of tearing the whole truck apart, then become overwhelmed with the task of putting everything back together and just give up....
A lot of parts are available at your local auto parts store or through the parts vendors that post on this board...
LockDoc