well i think it will work, my pipes are 3in. but were properly bent up like a u before the end of the pipe, they go inside the shocks, well they cross the shocks on the inside right where the shocks are, why not for dragging? how bout weekend racer?! a freind told me there may be clearance problems, but this is the right one, as my frame and alignment mustang pro told me the 3/4 in under sway would work on my fairlane, but i think the frame is wider, anyhow addco knew nothing of a 3/4 in under sway, all they make is the 7/8 ove sawy. thanks guys. it is so hard to get correct info! anymore would help although i already ordered my parts!! keep inmind i have dual flowmaster and 2.5 or 3 pipes