'64 Barracuda Exhaust Help

Sure thing probably wont be for a few weeks but I will post them. Basically I will cut them out right under the rear bumper brace holes on center. I am thinking of a 4x2 crome tip so the holes will be i guess 5 x 3? I am gonna take some masking tape and tape them off in the next day I will post that when I am done, maybe paint the area on the valance that is gonna be cut out I'll paint it black so I will get a good feel for what it will look like.