AwDang!
Nice truck.
Get new tires.
Check for oil leaks. (if you need gaskets, replace them).
Check for water leaks. See what need to be repaired/replaced.
Tune the engine.
Then, report back.
Unless you are bound and determine to "modernize", get it running like it was made to run.
Good luck with you truck and good luck with you efforts/strategies.
