Greddy Sp Elite help needed
 

I really love my Greddy axleback but I'm looking into the future and I have a few questions maybe some of you could help me with.

I'm looking to keep my car street legal so no off road parts. I want to replace the rest of the system going from axle forward. What parts would you suggest I replace the oem with? I plan on getting the high flow cat versions.

Contradiction. Replacing the stock cat is not legal (if it's functioning properly).
I'm not saying don't do it and I'm not saying you'd necessarily fail emissions. Just want to make sure you know that by the letter of the federal law it's not legal.

My vehicles are registered in VA so I'm not familiar with MD emissions tests, if there are any.