Z28Red01

Looking to get hooker competition headers that are a 1.75" with a 3" collector and hooker 3" catbacks. I was wondering if these 2 would fit the stock cats or if I should get new ones. Here is what I'm looking at, tell me if I'm getting a crappy deal too!

Heres the headers, not sure to get ceramic or black coated:
http://www.streetsideauto.com/produc...LookupType=YMM

Heres the catbacks:
http://marylandspeed.com/hooker-3-ca...hkr-p-792.html