Kevin, a few holes made with a carbide tipped hole saw in the vicinity of the pressure plate bolts won't destroy the bellhousing- - - -it just adds a little cooling air to the clutch. Or, the holes can be filled with freeze plugs later, if you choose. I've done that on several stuck engines to get access to the flywheel bolts. About a 3/4" diameter hole or three is all that's needed, depending on how many of the pressure plate bolts are hidden.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!