The 123 GB-4-R-V
The 123\GB-4-R-V replaces most 4 cyl. Lucas-distributors for engines in Great-British (hence ‘GB’) cars.
Note that there are dedicated 123-ignitions for Mini, Jaguar & MG.
Please check if the distributor need a connection for a mechanical rev.counter, as a 123\GB-4-R-V does not offer this.