Yes you can just change the module. I assume you are changing from 6v Pos to 12v Negative ground. So you need our 9704K-12 module kit, which come with complete installation instructions. With e-FIRE modules, the polarity is the important factor. They will actually work from 6v up to 14v but you can’t switch polarity. I mention this because some some people do run 6v neg and 12v positive ground.

The Stromberg e-FIRE distributor requires very little maintenance. After an initial running period, check and retighten all bolts and screws as required. Check all electrical connections including the spark plug wires. Further down the road, a little annual aftercare can pay dividends. Front-mount flathead caps get rocks and hot radiator air blasting at them, and when in rains they get terrible hot/cold cycling, which can cause cracks. That’s why many flathead guys keep a spare cap in the car just in case. We now only use/sell the USA-made caps, but it’s always worth a regular visual check.

A drop or two of light oil on the felt pad under the rotor will help keep the advance plate moving. And while you should aim to keep water and road salt out, it is known that air inside any distributor can become ionised and attract moisture, causing corrosion over time. All of the e-FIRE steel internal parts are zinc plated, but a light spray of water displacement lube (such as WD-40) to the advance mechanism (under the module plate) will help keep the advance weights moving as they should. If you remove the module plate, you can pull the advance weights out with your thumbs and check they return smoothly. If the car is laid up through the winter, cleaning up the brass terminals in the cap is also a good idea as they can go green with moisture. Stromberg e-FIRE service parts are recommended for reliable fit and service life. Always use Stromberg e-FIRE ignition modules.

People do recommend a bigger plug gap with electronic ignition. I quote from Google: Electronic systems provide a stronger, more consistent, and precisely timed spark than points, allowing the spark to jump a larger gap for better fuel ignition, leading to more complete combustion, better performance, and cleaner-running engines.

• Electronic ignition generates a higher voltage, creating a more robust spark. (What it actually does is allow you to use more voltage into the coil – hence more voltage out. Points distributors typically need a ballast resistor cutting 12 volts down to 9 or less, to prevent points arcing. Electronic needs a full 12 volts so the coil and spark benefit.)
• Improved Combustion: A bigger gap exposes the spark to more of the air/fuel mixture, creating a larger ‘flame kernel’ for a more efficient and complete burn, improving performance.
• Better Starting & Idle: A stronger spark helps with starting and provides smoother operation.
• Cleans Plugs: A more powerful spark can help burn off deposits, keeping plugs cleaner.

How much bigger ? We won’t have the test equipment to measure the differences scientifically, but there are plenty of recommendations on the internet.