truck woes, need some advice

[dubie]

Was on my way to the yard to bolt on a new box but the truck died about .3 miles away from the yard. I was travelling down a washboardy gravel road and it back fired twice, then quit. Keep in mind this is on a 250 inline 6. So i sounds like i'm outta gas, i wouldn't know because my dash bezel is off being painted. (which my wife did a sweet ass job of doing) So i get to the yard and they give me some gas. Get back to the truck fire it up but it's running like a POS!!! Kept flooding itself out. Then i noticed the vacuum lever on the bottom of the distributor isn't moving the way it should be. It should move whenever the throttle is moved. This is moving whenever it wants and makes the trucksputter like a *****. Any suggestions on what to replace? cap? rotor? vacuum? I will be changing this motor in a month or so, so any cheap solutions are welcome.
Thanks guys