I've got a '48 Jeep that stumbles a bit at idle when the timing is set properly. Runs OK though when under load. The only thing I didn't replace in the rebuild is the coil, cap, and rotor. Likely this is a good place to start looking.

-Boyo

'48 Willys CJ-2A / '55.1 Chevy 3600 / '66 Austin-Healey 3000 / '04 Volvo wagon (parenthood!?)