I bet they will scratch your head at NAPA or just about any FLAPS when you ask for that coil.

Here are some part numbers (maybe other people will help by posting other brand/part-numbers).

http://vwparts.aircooled.net/12V-Bosch-Blue-Coil-with-Mounting-Bracket-00-012-p/00-012us.htm

Maybe a NAPA IC14-SB will work (the price is right)?

By using the internal resistor 12v coil, you get a cleaner appearance (more "natural" 6v appearance), but you lose the ability to wire for the hotter 12v current while cranking the starter.

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.