Since the bellhousing is the attachment for the rear motor mounts, and two of the bellhousing attaching bolts are hidden behind the flywheel, it's very difficult to install a 235 engine without the bellhousing, and possibly the flywheel and clutch attached. Doing that with the transmission still in its original position is going to enhance your cussword vocabulary immensely. You'll spend at least 3 to 4 times as much time trying to jiggle everything into alignment than you will if you just disconnct the driveshaft and PTO and back the transmission up 6-8 inches, supported on a jack. Once the engine is sitting on the mounts, then slide the trans into place and bolt everything up.
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!