Extremely Dissapointed in my TTI exhaust and headers maybe someone can help with my fitment issues and provide some guidance

Now I'm having trouble with the dual exhaust as well. If I mount the headers connector pipe to the driver side header and slide on the mid pipe and muffler, the muffler hits the differential yoke. If I turn the connector pipe where it bolts to the header it will point about 3' under the car. WTF am I doing wrong here.

when i did the tti exhaust on our 70 dart i had to cut like 4" off the head pipe i think it was in order to get from there back to fit properly.. perfect fit after that..