hello everyone, i need some expert help id'ing a 440 i picked up. i was wondering if this is a hard to find motor or if you can tell where it came from, model or anything from the castings. i bought it for a truck project and dont want to tear it up if it is rarer block or anything that restorers could use. thanks for any info. John

block numbers on passengers side- date of 8-16-68, 2536430-7

drivers, 2536430-7

distrib pad- E440, 9 10 2 and a sidways stamped A

intake is 3698444-1

i belive heads are of newer vintage from some searching, 4006452

any help is much appreciated. thanks, john