727 Part Number

Can't find this casting number. I just purchased a 360 with a 727 bolted up to it. There are the numbers 925-1 on the bell housing in big #'s then down on the side is 2466925-1 and A 727 A on the bottom of the bell housing. On the tail shaft there is 2466901. I found reference to the tailshaft number but not the case # I've looked at all the sources I could find on the web.

Also this trans has a 1 wire neutral safety switch in it. Can I just put in a three wire switch off my 73 904 or will there be a problem with the rooster comb? If I knew what year the trans was for sure that might help but I can't find any info.

Thanks in advance.