Yep, I just went and looked at it this morning, pretty crude! I have a template a buddy of mine made 20 some years ago in case anyone needed the exact dimesions to make an A-Body 440 block. I also have a 440 block that has two drilled pads near the head just like the A-Body 383 block have, wonder why they did that?
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
