I picked up a 440 the other day and I'm looking for some help on identifying it. Its cast date is 4/2/68, the front pad is pitted but I can see HP2 on it but thats it the rest of the pad is pitted to bad to read. Where the vin would be on the side is blank? And I found a stamping on the bottom of the block beside the rear main seal starter side PT440P24980783. Does anyone know what that number is? The opposite side just has a B stamped on it.

Thanks for your help