I am recent purchaser of 1989 IROC and new member to this message board. I have purchased a set of the Hooker 2055. I have decided to remove the AIR set-up and removing cat and putting electric dump in its place. I did this on the LT1 that I had and it worked great. The question I have though is does it make much difference where I mount the bung for the o2 sensor given that the Y Pipe did not have a place for it pre-drilled? Thanks.

 

My mistake. Found it on the driver side header. I expected it to be lower. Thanks