1963 426 stgII max wedge
BTW- the id pad on your engine reads:
426 = displacement
T = 1963
MP = Maximum Performance
3= March
16= 16th day
08= the 8th engine assembled that day
Only the 426 MW engines in '63 and '64 were numbered that way. Cool in that it makes every max wedge a one of a kind, as no two engines can be stamped the same.
A high compression engine would read 426 TMP-HC like this one