Is this kam racing system the same as ktec?

[JoeMarano]

http://www.kamracing.co.uk/car-tuni...sts-2-0-16v-rs-172-phase2-stealth-system.html

Also as I plan to do trackdays and also use it as a daily do I need the centre silencer?

 

[JoeMarano]

Also are they easy to fit to a phase 2 172?

I havent even been under the car yet so hoping its as simple as unbolt old one and whack new one on? Or is it more involved than that?