DISTANCE BETWEEN VALVE COVER BOLTS (TWO ROUND HOLES; HOLE CENTRE TO HOLE CENTRE) approx 49.57mm
DIAMETER OF CAM SHAFT COVER (THE BIG ROUND HOLE) approx 72.05mm
DISTANCE BETWEEN CARBY MANIFOLD MOUNTING HOLES (HOLE CENTRE TO HOLE CENTRE) approx 44.47mm
DISTANCE BETWEEN TOP END COVER (RECTANGLE ONE; HOLE CENTRE TO HOLE CENTRE) approx 50.82mm / 50.27mm