are there common known bad problems with these trucks?

Its a 83 2wd regular cab
V6 (don't know which one it just says v6 on the windshield)
Manual transmission, don't know if its a 3-4-5 speed (**** is gone)
Body looks ok, but all I was do today was a quick walk around.

I've never owned a little truck before, what should it get for milage?