Possibly but not a huge gain for the money. Depends on what the cost is Of the headers n cats. The cat back exhaust looked quite restrictive to me to but may not be.
I'd do gears and a tune , you'll see way more then the extractors.
I paid $300 for my pacemakers and cats. Replaced my stock system as had a collapsed cat. If I were to do it again I'd have just welded some high flow cats in.
I dno if was worth the $300 and my Saturday put it that way.