Rough idle, running rough
 

I posted this in another section but thought I would try this area too.
I have a 1968 RS/SS Convertible that has been running great, but on the way home suddenly started running really rough and won't hardly stay idling.
It has an Eldebrock carb and points ignition (both fairly new). I have checked all the basics and changed the fuel filter (clear).
Any thoughts or ideas?

Check for vaccum leaks?
/lantz08, Sweden
Camaro -78 454 LS6
Ratcar customs club

Grab the distributor cap and if it shocks you, bag plug wires or cracked cap.