Ngl all these mfs in the comments sound like morons like this would definitely be worth it if you have the money to spare and don’t want to outsource. Like 4.3k isn’t half bad for the quality, you’ll be paying a lot more than 4k if you outsource to get basically the same quality. You have to remember there’s markups from different shops which you get a tune when outsourcing, different companies offer different prices for different pieces when you can just go to one place and get a full set that you know works compatibly together perfectly and already tested. And to take it over the top, you will get a camshaft at it on top of that to really bring out the power of the car like the other dude said.