I bought an alum. adapter block off of ebay , 1/2'' thick to go to the late model dual reservoir , forgot how much it moved it over , still had to mill the back lower fin down to get the valve cover off my wedge raised port heads . Have always wondered if it would come off if it were a hemi--------I did use flex brake lines to hook up to it , in case I had to loosen it and **** it side ways , but dont .