I'm working on the girdled head install and having problems with the stock exhaust mounting to the exhaust adapter. There is about 3/4" interference with the girdled head on each side. Has anyone run into this? Can't find anything thru search or the ADA site. It looks like you have to carve off of the stock SJ cast aluminum exhaust adapter. Is that OK? Also the stock air intake interferes as well. Is this something else that has to get carved off? Also, how do you run the tiny exhaust hose to the head? The fittings that come with the head are for the rear water hose and a plug for the front hole. See below pics: