wonderboy24 said:don't agree .i didn't have to do that on my exhaust .
Well according to your avatar pic, your car looks like it's sitting higher than most. On my car ( and many others ), if my exhaust was like yours it would get crushed easily. Also depends on the exhaust size too.
Think about it, If having your exhaust pipes going under an unnotched crossmember is the correct way of doing it, there wouldn't be aftermarket 'dual hump' crossmembers, not to mention factory dual hump crossmembers on some older cars.
My point is, if you want to do it, then do it the right way so you don't have to redo it later. Doing it 'wrong' can still work, but doing it right just works better. I mean you can call a Fullback dive on 3rd and long and get the first down, but I wouldn't call that the right play call if you really wanted that first down and I certainly wouldn't recommend other teams run that play in the same situation.