The 85 dizzy is ready for the roller cams... that is HYD roller cams.. MOST solid roller cams, they will need the Bronze gear on it. just remove the stock gear and install the bronze gear.
"that ticket , Thumper??" I look at this.. the duraspark is in every autozone in the world, yes!! 65-85.00 ! you will/can modify the springs and advance settings inside the duraspark ( articles all over on "spinning in the Dizzy" ) Now you have a stock looking modified Dizzy for 85-90 bucks vs the 145-165.00 for the trick MSD or other !! the MSD 6AL is a must . I like making things fo fast on stock modified parts, and spen the extra money on other stuff.. lol
Just me....................................
Thumper