hi i have 69 roadrunner thats tubbed with a 4 link and ford 9 inch.the engine is a 440 bored .30 over with forged dome pistons im guessing about 11 to 1 compression,292comp cam, ported 944 heads,torkerII intake with a 2 inch spacer,barry grant 850 cfm carb,and large tube headers, 3 inch exhaust.after many problems with the stock ignition i installed an msd 6al box and an msd pro billet distributer. runs much better now but i havent messed with the springs or stoppers in the distributer yet and i know there not right cant seem to find any info on correct timing curve,what initial,what toatal and the curve any advice would be super helpful