Anyone else using MegaSquirt on a LA motor?

Not an LA motor, but I am running a MS3 Pro on the Slant in my 68 Barracuda. I agree it was a deep dive at first, but after getting accustom to Turner Studio, it is a great FI system.
I do have a question for the MS users with A bodies.
Where did you mount your ECU?
My car was a strip only car so it was mounted on the passenger side floor. I am inprocess of changing the car to a strip-street car, so the ECU needs to get moved.