When there is one or two intake runners missing it is
definitely easier
to get your hand in there and change out vacuum lines and carb drain
lines and the caps on the back of the runners...
If the tank is off it is

easy to loosen the (two?) bolts that
hold the air box on, and then remove all the intake runner bolts... the whole
assembly (airbox and runners and the hoses that connect them) becomes
free floating in there. Prying the runners off is a real breeze then...
-Mike