My 67 mustang with 302 was running fine. I took it out today for a ride, and every now and then it would stumble a little at speed. It got progressively worse, and eventually started breaking up pretty bad, even stalling at a stop sign and hard to start again. Made it home, but didn't even want to idle in the garage.

Wires, plugs, cap, and rotor are all less than a year old.

The points did look pretty burnt up, so I replaced both sets (Mallory dual point). Checked dwell and timing. Started up and it's idleing good again. I think I've got it, so I take it for a spin. Not going hard on it, it seems to be running like a champ on my street. I pull out onto the main road no problem, but after I get going it starts to stumble again, not as bad as before, though. By the time I turn around and get home it barely idles again (but not stalling out like before). By now I'm so POed I parked it back in the garage and went back inside. I have to work tommorow so I won't have a chance to fool with it until tuesday, but I'd sure like to fix it on tuesday.

Any other ideas? My poor car