whats the deal with the new tranny mts.

ok guys, what am I doing wrong here. The mount on the left side is what everybody is giving me for my Duster. The one on the right is the one that came out of the Duster. The one on the right bolts up perfect but due to the bolt pattern on the new one, it will not work. is there a difference in mounts for an a body with a 727. any ideas as to what is wrong. I got the driveshaft back and I am ready to go when this is done. I ordered a new insert for the old one here but the shop told me he didn't think he could get it pressed out and the new one in so I don't know what to do here. I may just fabricate a new plate on the bottom and drill it to fit the old one but as a last resort. what do you think the old one is for.