I was talking to a racer mate of mine yesterday, he said that another trick was to build up the travel stop for the mech advance with bronze to limit the advance to a safe level.

1200RC, PM me how much you want for that dizzy.

I think for modifications like this you will be lucky to find a shop that does it. Its more something that a racer would stuff around with himself.
If you can get push/pull actuators I am sure you could make it fit. But I can picture the actuators arm interfering with the pickup when it pushes to retard. This could be overcome by shaping the arm to go around it, but it would probly require milling out of the dissy housing to stop it hitting there.
I think the cost would come close to that of having another dissy machined to fit the desired engine.

Below is a pic of my centrifugal advance after being locked. On the left the hole is brazed up completely to prevent movement. ( My ignition is computer controled.)
This distributor was used in another car and the hole on the right was previously filled a little to limit advance.

Bart,
Step 1 , have you accurately identified where TDC is and do you know exactly how much advance you are running?
With the Turbo car ( low compression ) I ran a fixed 30degrees total- primitive by todays standards but it worked although I would hasten to add that was back in the days of good old leaded 96, not the cr#p that we get served up today.
Do not drive the car again until you get this sorted - there really is no quicker way to kill an engine.
Talked to Colin Grey? He's very good on dissies and would be an excellent place to start before you charge off buying anything.
Cheers
Dave

I am planing to do an E15 dizzy conversion. I'll talk to Barry at quality rebuilds, when he gets back to work, and see what he thinks. There is a low buck solution, I just have to put some time into figuring it out. I think that a bit of trial and error should work it out. I posted this to see what everyone else had done. I wont be driving it too far without unhooking the feed to the blower clutch. I don't want to crack a slug. (If I haven't already)