1970 Duster Distributor

I am finally putting my engine in my 1970 Duster and I have an older Mallory distributor (3757901) in it, and it appears to be to tall for this car! my question is does any one know who makes a good distributor that will fit in my car and what make and model it is. I have looked at MSD and Jeg's brand but I am not sure of fitment. So, I figured maybe I would ask so some one at A-bodies who already knows! here is a couple of pics of mine!

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