Notching the crossmember for exhaust clearance

I had Midas install dual exhaust, under my 1964 Valiant.

I do not have a "dual notched" crossmember,
I have no major problems with speed bumps etc,
for ground clearance.

There is one driveway near me, that when I exit one of the pipes touches,
but my 1981 Imperial hits worse at the same place,
and my neighbors 1998 Accord really bottoms out.

I am using 2 1/4" pipes.