With the pan off, it's a very simple matter to use a framing square or something similar from the pan rail of the block and/or the top of the flange of the oil pan to establish the correct distance to set the dipstick. Just be sure to add or subtract 1/8" to compensate for the thickness of the gasket.
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!