Are O2 extenders need for MAC headers?
My Drivers side slid right in from the top. Nothing had to come off but the coil pack.
My Pasenger side would only go in from the bottom. I had to cut a little nub off the block to get it to fit, and remove the starter. (If you go this route, you will know the nub well!)
Good luck, and don't get frustrated, they WILL go in.... eventually!
Oh yeah, no 02 extender here either.
Tommy


