That's what I thought. I don't know about ITRs even though they keep the same body as the GSR basically, but I was pretty sure a 2-door GSR spoiler wouldn't fit on a 4-door GSR properly. I know every company asks for you to distinguish which you have so there had to be a difference.mickey513 said:They ARE NOT the same. I have a 4-door gsr and my friend had a spare 2-door Integra spoiler which he was going to give me. However, I compare it to a 4-door I bought and they are different, not by a lot but it's noticeable.