found big-block 727s in a friend's garage

9B287699 #2892093 from a February '69 built 383 4bbl/440HP Charger - VIN would've been:
XP29H9B287699 or XS29L9B287699

9B295820 #2892090 from a February '69 built 383 2bbl Charger - VIN would've been:
XP29G9B295820

9G258728 #2892093 from an April/May built 383 4bbl/440HP Plymouth b-body