On my 88 pioneer auto with the column shift. The bench seat is straight across, and on my 91 eliminator with the ax15. The bench seat have a notch in the middle (I suppose it's because to accodomate the mini console).
I'm swapping in the ax15 into the 88 and I don't plan on using the mini console, I plan to have the boot mounted directly on the floor, and from my eyeballing it doesn't look like I would need to swap the seats.
Is there a particular reason for the notch on the seats other than the mini console?