I have a 69 Chevy C20 with a 350 and a Muncie 4 on the floor granny tranny. My first day driving it I there a belt and blew the heads on it. I'm going to rebuild the engine with some small upgrades (cam, heads, intake, headers etc) but I'm trying to ID the year of the engine and I'm getting confused. The numbers stamped on the back near bell housing are 14093638, the stamping on the front passenger side are V0318TDF. Anyone able to break this down for me?