Doug's D453's On 73 Duster.....Some Help Please

Hi Guys, I just purchased a set of Doug's D453's for my 73 Duster. I have spoken with a couple good people on the forum regarding the fitment of these on my car and I was hoping that someone who "Has" installed these on a 73 duster can shed some light for me before I even try to install these.
The car is a 318 (will be 360) , 904 trans, with manual steering. This car has the "Spool" mounts. Thanks "Crackedback" (Rob) for your earlier help. I just wanted to see if someone here also can verify they do fit. Some say yes....some say no.
I talked to Doug's (Pertronix) today and they "Think" they will fit. Well.. if they don't..I will have to sell them and get something different.Thanks to all that can help. Hopefully someone can say yes they will....