Greg,
This is the MSD style.
I run a Holley version but I think Holley don't make them anymore.
Blaster HVC, Works w/ MSD 6 Series Units - 8252
I ran it with a standard Ford electronic dizzy for 7 years.
This is my Dizzy I have been running for the last 3 years
Ford 289/302 Ready-To-Run Distributor
Part No. 8352
You can just see mine on the right hand head under the heater hoses.