hi, i have a 98 civic ex coupe, i have an aftermarket exhast catback, and my exhast tip is very close of touching my rear bumper, if i add this rear lip on, would it be rubbing it, or do i need to lower my exhast to make the lip fit perfectly?

Also, are those lip on ebay any good? is there any other places to get front and rear lips for my car?

thanks you!!!!