I did the ones in my 1ton with the motor in the truck. https://m.youtube.com/watch?v=NVnDWdJrQBk&feature=youtu.be
if you drive them with the cam and tappets still in, you’ll need to break them off mid way.
I used a vibrating saw to score them before I snapped them.
and yeah, prep that baby like it is going into surgery ?
I plugged all the possible holes with towels, wrapped towels behind my work area and then I used tin foil to hold it in place.
oh yeah, I also bought a driver and setter
I was pleasantly surprised how much abuse that block took