Something I forgot to add about the Holley mounts is they also allow for a 90 degree oil filter adapter to be use. It's not cheap, but not sure it is more than the remote setup either.
If you run an automatic, you can keep the MDS. I think the Terminator X can run it, and the OEM computer certainly can. Only trick is turning it off. On the late model cars, sport mode disables it (I think), but no idea how you could turn on sport mode for the OEM computer and I don't know if the Terminator X can toggle it off and on with a button or something. I'm a stick guy and have a T56 so I've never looked beyond what to swap out to remove it.
On the OEM computer, at least for the 2015+ Challengers, the Sport button is in a separate module that ties into the CANbus network. It might be as simple as setting up an Arduino to put the right message on the network with the push of a button, but not certain. And if it is on different CANbus network than the PCM lives one, it would get more complicated.
