MSD w/tripower
Late in replying to your question, been very busy with my business thar funds my passion for cars.
I currently am building a 1931 F**d street rod highboy powered by a low HP 409, cast iron 3/2 intake with show car carbs, linkage, air cleaners, also MSD distributor. Fired engine last nite for first time (what a thrill with open headers)
so far works fine although I haven't driven car yet. Engine is all set-up (dialed in timing, adjusted center carb idle, checked vacuum advance). Will know better about progressive linkage after I drive it. Hope this reply helps
Regards
hotrod 409