Is the clutch cover still bolted onto the flywheel? The tricky part is removing the clutch, but with the sheet metal inspection cover removed near the top of the bellhousing, it's usually possible to reach all six pressure plate bolts with some creative use of extensions and universal sockets. Once the clutch and pressure plate is removed, the flywheel bolts can be reached with a breaker bar and a socket from the bottom inspection hole. If the engine is in the vehicle, getting to that upper inspection plate can be tricky!
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!