port and polishing my heads I am wondering if it is ok to remove the small bump on the top side of the exhaust runner about 1/2 in from where the exhaust exits the heads. It is almost a 1/4 in in height and would definetly improve flow if it was not there, I dont know if this is part of the water jacket or what I want to take it out of there but would like some suggestions on the best route to go thanks alot you guys really know your stuff so I trust whatever you say is best. 87' GT w/ stock heads