Yes sorry I am aware that it is a 307 not 327 that was a typo. It is not the original engine to the truck it was a 4.1 straight six originally I have the owners manual with the Vin correct information it was a 3spd on column and is now a 4 on the floor. I am 100% sure of the numbers and that's why im so confused the 000 doesn't match any suffix codes I have found. Maybe a crate engine but then why the vin stamp?