yes, easy but
On a scale of 1 to 5, I would rate it a 2 for ease, but a 4 or 5 for potential for messing it up. Be careful not to crossthread those rigid fuel lines. We learned to assemble the whole rig and then bolt it onto the block. If you are using the old copper seals, anneal them first or buy new ones; they do not always re-bed snuggly. Take care, Joe