Smaller Distributer?

I am looking to get a smaller distributer for my car. Being an early a-body there is not much room by the firewall, and the intake does cause even more problems. I was thinking perhaps one that does not use vac. advance?

I know mallory make ones that are smaller in diameter, but I need to figure out which one will work well with my MSD/BlasterII combo?

Any suggestions/Part #'s would be appreciated.