S375/6WP PAIR 750CC HEADS 7 STUD 1926-1931
PLS NOTE
HEAD STUD HOLES ARE DRILLED TO 3/8" (CAN EASILY BE DRILLED OUT TO 7/16)
SPARK PLUG HOLE IS 14MM (CAN EASILY BE DRILLED OUT TO 18MM)
THE PRIMER PORT IS DRILLED AND TAPPED BUT NOT ALL THE WAY THROUGH. (EASY TO DRILL THRU)