You don't know it until you get everything installed, but you may find yourself having to choose your carb and air cleaner to match the dizz. You may also find that the intake interferes with pokey-out bits on the dizz, limiting the ability to turn it. I experienced all of these problems when I fooled around with one on my 302. I pulled it, sold it and went back to my factory dizz with Pertronix.
Here is al alternative. Use a Duraspark dizz with an aftermarket performance HEI module. I have a Duraspark on my 460 and whenever the MSD box breaks I sub in the HEI module.
Instructions:
http://www.bronco.com/cms/node/25
Have the Duraspark dizz tuned by Scott Johnston:
http://reincarnation-automotive.com/ to fit your build. Simple, modular, looks like a Ford, room to work around it.
"That wasn't any farewell slap." -Dick Powell