Which Electronic Distributor Would You Recommend

Thanks for your suggestions. The MSD box I already have so this is why I was planning to use it (hidden under the dash).

Any interference issues with the MSD or Mallory units anyone knows of when using the stock 69 4 barrel air cleaner? The distributor is pretty close to the back of the air cleaner from what I remember (car is currently apart).

Are the MP distributors springs and advance weights accessable under the rotor or does the distributor have to come apart?