MSefi.com read only forum (Jan.15,2018)

I'd leave the distributor completely untouched while putting in the crank trigger. If it worked with the normal advance curve in the position it's in, it should be fairly close with the MS. You may benefit from a wider tipped rotor if one is available.

You can double check using methods outlined here.

http://www.msdignition.com/uploadedFile ... hasing.pdf

-Alex

Here is another good write-up specific to the Ford Duraspark 1 distributors.

http://www.junkyardgenius.com/ignition/ ... ing01.html