The concern is with these if they are not installed far enough foreward you can't take the head off. Gordons kit has an additional threaded portion that unscrews. I would ask for verification that the head can be removed, if they have auctually tested it I see no reason not to buy it. The splice for the angle bars is easily fabricated. I made my own that were tapped so I didn't have to deal with nuts on the inside. I do have a gordon kit installed, it was way easier to pull the engine, I may put it back in then take the head off just to see.