dont put integra rails, or you be sitting up mad high, im talking about head to roof high, i've done it in my 4 dr tegra, i used rsx rails and took off the 2 front rsx mounting brackets in order to sit right. heres a picture of what i did and what i used.

http://i32.photobucket.com/albums/d7...t/Image002.jpg

http://i32.photobucket.com/albums/d7...t/Image004.jpg

Custom bracket i made to get seats to sit lower and not have my head hitting the roof.

http://i32.photobucket.com/albums/d7...t/Image008.jpg