Updating this thread, and will continue to do so.
I had a knee-jerk reaction (understandable I suppose after the sour CSR experience with Dinan). However, I went to my go-to aftermarket vendor who is always top notch, attentive and polite
Mike@x-ph.com.
Dinan catback for M2C ordered. I should be getting it early/mid Aug. I already lined up a custom exhaust shop for the install, so I will document what is needed to hook up the Dinan catback exhaust with the non-res AA EL.
Stand by y'all!