are they a direct bolt up to the stock y pipe?

will they affect the sound of my current 3 inch custom bent borla xr-1 system?

will the drivers side header be good to use with a KB racing or trick performance front mount turbo?



i know that full length is the way to go... however i am going to cam and turbo my avalanche in the spring of next year so i cant use a full length headers with the front mount systems... however if the drivers side OBX shorty header works than i will be doing this...

i have a co worker that is returning his truck to stock and has these headers off his 04 silverado will be going to me for a spare radio that i have lying around... so its like i get em for free! so a free set of shorty headers is better than stock manifolds any day!

also... if i were to cut my cats out and have the tune turn off my O2's than how will this affect me getting an inspection in NY state since we have to plug into the computer for the sticker... i can hide the fact of the lack of cats... i know people to overlook that for me... but will the computer pick up the turned off o2's and fail me?

 

anyone?

 

help!