[mysocal911]

Originally Posted by buster73

I opted for a 123 ignition distributor (USB version) with stock Bosch CDI unit and coil. Very happy with the result:

http://forums.pelicanparts.com/911-engine-rebuilding-forum/1139902-weber-carburetor-ignition-tuning-modified-3-0-a.html

Better yet, the 123 system driving an inductive discharge coil, e.g. modern Porsche (911 3.2 thru 993), and simple & reliable.