is he running shocks & towers or were they cut off when the beam was narrowed?
i would shy away from removing leaves. it's an old trick that was used before we had all the other parts to do a proper lowering job.
from what i've heard, removing leaves will only make the other leaves that are left in weaker and more prone to breakage.
if he really wants to run shocks, he could fab-up some shock mounts to the inner panel or somewhere near the gas tank mounting hole.