Originally Posted by grizz1

Hi Rich, Hope it's all going well for you in the US

That sounds like the old Pro Series R motor. The 5 Port was silver head, the 7 Port was orange head, and at the very end of that era they did a 3 port with a coral pink head. These motors preceded the GX Series 3, 5, 7 ports
Makes that motor at least 5 years old, maybe a little more.
Very strong motor. Only problem is the current sleeves won't perform as well in that older Pro Series crankcase. Current 21-0600 rods and the newer ramped cranks would fit ok.