Yes, I did. I just screwed in the screws to hold the armrest down and left the carpet exposed in between the shifter area and the armrest. Looks pretty nice and looks stock. I was thinking of cutting the original piece to make it fit but thought the carpet looked alright. I would send more pics but the Integra is now gone. Some punk kids kept on breaking into it so I had to let it go.
I really dont know if it will work with the stock seats. You should go to the junkyard and pick one up. It was only like 5 bucks at the one I went to. If it doesnt fit you can cut of some of the sides to allow the seatbelts to fit well.