I HAVE THE CHANCE TO PICK UP A SBC 305 FOR NEAR NOTHING TO PUT IN MY 53 MERC...DONT KNOW THE YEAR, IM ASSUMING EARLY 80S. IS THIS GENERALLY THE SAME BLOCK AS THE 327/350, ETC OR IF IT DIFF, ANY OPINIONS ON IT? IM PLANNING TO JUST GO W/ EDELBROCK PERFORMER INTAKE/CARB, AND HEADERS, AND MAYBE GET IT DECKED TO INCREASE COMP.