I measured the cylinders deck to base is 102.5 mm Exhaust dect to bottom of port =55.5 and deck to top=29mm./ Intake is deck to bottom of ports=101.5mm and deck to top of port=67.2mm/ The port above the intake (not sure what it is called) deck to bottom of port= 60mm and deck to top of port=43.5mm/ side ports(again not sure what they are called) deck to bottom of ports=60mm and deck to top of ports =42. I will post some pictures of the cylinders just looking to see how they look and possibly what the ports are as far as a drag,dune or what.