Hey everyone. My name is chase. I just recently picked up a 83 250r. And it had a couple of things that needed to be fixed. There was a leak at the head gasket so I got a I picked up a top end gasket kit on eBay. And I noticed that the head gasket that came was for a stock 250r that has 6 head bolts and mine 250r has 7 head bolts. Does this mean that it is the 300? I measured the piston and it measured 76mm. And if it is the 300. Where would I find at piston and ring set. I looked all over eBay and the closest thing I could find was a 73.75mm set. Any help is much appreciated.