Yeah I thought so because after researching the OEM twitters are about 1" as well. I can't wait to get the car so I can work on this project. There's going to be so much to do with that car (clay/wax/polish, Clear bra install, mud flaps, possible tail light overlay, some 1080 cf wrapping around the car)
Update: Found a much better amplifier and eliminated the need for a sound processor and LOC.