The 6 will come with instructions. To see them early, go to the MSD site and click on downloads. Keep punching down and you will find a list of installations. Select the one that matches your's. http://www.msdignition.com/downld1.htm
I'm not familiar with Mallory products other than what I've seen in the store. Any particular reason that you want to mix brands on your ignition? Most guys just use same brand box as distributor. On a street car you will probably want the vaccum advance and will need to recurve the mechanical to suit your vehicle. They will all 'run' out of the box, just be prepared to 'tune' them to get optimum performance. They come with instructions on how to tune.
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