The simple way to tell would be to torgue the bearing caps up with the crankshaft removed and measure the bores with an inside micrometer or a dial bore gauge. The purpose of the shims is to adjust the oil clearance on a slightly worn bearing by removing a thin layer of shim during an in-the-frame rebuild, same as adjusting rod bearing clearance on Babbit rods.
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!