Just a referral if you live near the San Fernando Valley (CA)- I purchased a Borla and took it to California Muffler for the install. He did a first class job in about 30 minutes for $75.00. Both are the same height and perfectly centered in the opening.

Highly recommended - and thanks to Mayur for selling me his system!!!

 

$75, that's quite expansive. My place only costs $25 to $40 to install. Or you can pay me $30, I will install it for you.