cast crank to forged in 440

I'm wondering if that's a date or if that indicates a 4.25 inch stroke with std size main and rod bearings. But unless your planning on huge power, I would probably stay with the cast steel six bolt crank and save this one for your all out build.

Yeah I am not going to use this crank for my application , unsure about 4.25 00 being date or stroke , good question , I may still get a steel crank 6 bolt flange , unsure yet , will need to see about getting the cast crank drilled an have to find a damper for it , I didnt build the 440 that came with my Duster and I like knowing whats inside an need to dive in this one a little deeper and if I have to pull the crank to see about drilling it out , I may buy steel forged crank ,,got a year or so to decide on that part ,,for now I am collecting many parts ,,thanks for all the input