I guess the OBDII port in the car is long obsolete compared to the Coyote PCM? What will you do for this?
Actually that's not true.
All modern vehicles utilize the same OBD II port. It's a standard since '96, with some manufacturers starting a few years earlier.
So, it's as simple as wiring the Coyote's CAN network wires into the existing OBD II port on the Marauder, which involves adding in two pins on the existing OBD II connector.
When they designed the OBD II standard, they accounted for expansion. Older vehicles typically use only 3 wires of the 16 slots on the OBD II port, that usage has grown over the years with the addition of HS/MS CAN, SCP, LIN networks in vehicles.
Luckily, the Marauder is old enough, the CAN BUS pin slots are vacant, so, add in the pins for the Coyote ECU, and leave the rest be. Everything will remain functional via the stock OBD II port, on both the Marauder (VAPS/Air Suspension, Climate Control, Cluster), yet you can still have full engine diagnostic and 2012 Coyote computer communication on the same OBD 2 port.
My Vic was the same, used the stock OBD port the car came with to read/write and datalog the LS ECU.
Good question!