I have brand new Lucas style distributors that have all internal componants. look just like a standard one from the outside with 2 wires coming out.
They are dear at $500 BUT they give the biggest spark and most energy of all the conversions you can get.
I use one on my 1700 XFlow; 6,500+ most gears and has never missed even on dyno runs. Come with a side entry cap and with or without vacuum.
Also have 2L ones as well.
http://classicescortparts.com.au/ind...id=93&TreeId=9