I would use a micrometer on the rod and main pins and block/rods... especially since this is an older engine. Put whatever size bearings in (rods and mains).. and TQ the caps down (rods and mains). Don't put the crank in.. just TQ the caps down without the crank in. Using your mic, measure each hole. Then, measure each corresponding pin on the crankshaft. Subtract the number that you measured from the pin from the number measured from it's corresponding hole (block) and that'll give you your clearance. Do the same with the rods. I know it's a pain in the ass.. but it's worth it. You'd hate to pull it apart again for a spun bearing.. or low oil pressure..

Travis