I've been through it and am comfortable in saying you will need an MSD tach adapter to get the proper signal. I still say call them so they can properly advise... In the beginning (not THAT beginning) I put a hood tach on my 'bird with my accel dual point distributor. Later in life I added the 6AL box and after it was done, I required a tach adapter for the signal. Then a couple-4 years later, when I decided to install their <MSD> electronic distributor, I had to use a different tach adapter. Whats a zz2 crate motor anyway?
