383 build

From the markings on the crank which were hard to read it looked like the casting numbers for a 383. Also the ends of the counter weights would need to be turned down to clear the block and this machining is not present. Putting all of that together I assume I have a basic 30 over 383. I don't want to say a name until I know 100%. What else can I do to check crank stroke? The rods are stamped as factory b rods by the way.