It looks like the right place to me, unkiemonk. It is a general list covering all brands, and because they are old engines, Restoring, Customising and Modifying is the right superforum.
Thanks for coming up with this. It could be very useful to people who come across a Rofo coil, or an engine which has already had one fitted. It would be great if it were cross-referenced to the original coil brand and part number in each case, but I can understand why they didn't do that.