Chevy/GMC performance exhaust is the Borla touring option. It is the quieter selection of the three options. S type and the ATAK are the other two options. S type is aggressive and sounds pretty awesome in my opinion. The ATAK is definitely the most aggressive of the three. The ATAK option fits limited truck packages. I know nothing of Corsa. There are other great choices too. Comes down to what you like best. Most all the top tier brands seem to be easy enough to install. Happy hunting and good luck.