Not misunderstanding, DGC said that it could be done with motor mount in place, as in no even loosening to tilt motor over. If that is not what I read, then yes I misunderstood. The first time I ever installed headers in an A body I used a cherry picker to pick the front of the car up high enough to get header turned up into engine compartment from underneath. I also had to use a floor jack and block of wood to raise motor up when the car was up that high. PITA, glad I went TTI's since my youthful misunderstood days.