The EGR side pipes and main bolts are doable with regular wrenches (1/4" rotation at a time, hence patience) and with small sockets and extensions....the main bolts do get out of their holes but not from the valve but that does not matter.....the main issue is the pipe going into the exhaust manifold...a guy with big hands would have to loose the brake pump to get their hand down and reach the connection into the manifold with a crow foot wrench and a small ratchet....once that pipe is loose the valve with the bolts and the pipe will go out with some fidgeting.... Crow foot wrench...