Pointers on coping body panels for exhaust exit locations

[protour_chevelle]

Looking for any pointers/tips on coping the section below my rear bumper to recess the exhaust tips. This is on a 72 Chevelle. The panel is steel.

Thanks!

[astroracer]

Many different ways to do this. What is your end result supposed to look like? What tools do you have?
I did these in the roll pan of my truck
https://static1.pt-content.com/images/pt/2013/05/album_pic_phppic_id562vi-1.jpg
Mark

[Wall]

I think these would look cool. Although you might have to look at a few different models to see what shape worked best on your car.

[protour_chevelle]

Id like to install a traditional looking Chevelle oval tip but larger, probably 2.5" x 5", and sink about half of the tip into the panel below the rear bumper.

[protour_chevelle]

The layout part I can figure out but the methods of cutting Id like to know some tricks. I have a good selection of tools and am willing to buy tools if need be. Im quite comfortable around metal and welding, just body work is new to me.

[jlcustomz]

However you choose to make it look, probably the easiest method is to figure how much roundover you want in your transition & cut the body part that much bigger. Then make the recessed part with the roundover & fit to body part.

As far a cutting tools, that's fabricators choice, You could use something as simple as a quality jigsaw with the proper blade or even a cutoff wheel. I'd leave a little extra material & grind the rest up to the fine tuned fit needed with a double cut carbide burr bit.
This is my cutout side exhaust on my extended steel rockers ( thread in this section).
https://static1.pt-content.com/images/pt/2013/03/DSC00711_zps5499f2a9-1.jpg (http://s1094.photobucket.com/user/jlcustomz1/media/DSC00711_zps5499f2a9.jpg.html)