"jwalkerftw":
Kinda makes you think you opened a hornet's nest, right!?! LOL. This group has a lot of good experience and model specific knowledge; but at the end of the day, what is best for you and your budget.
I have a 2025 ST with a K & N Performance Engine air filter, otherwise it was a bone stock ST from January to March 21st. I had an MRT H-Pipe only installed (resonator delete) and love it. It is truly your preference; my 2010 Mustang GT Premium convertible came with an H-Pipe from the factory. This is the 2nd time I have installed an H-pipe on one of my Ford Performance vehicles.
TRy this:
https://photos.google.com/photo/AF1QipNiBlZpTIf6LVIn4YINEFi4e1dGnTC5ahxuQjow (I hope you are able to open this short video).