So I'm freshening up my top end after a blown head gasket. I have a hr 64 +4.4 crank and a cylinder works bored out stock cylinder to 98mm. I want to upgrade it to a athena 478 top end kit. I don't like just the bored out stock cylinder, thares hardly any surface for the head gasket so seal. Is this a good kit? It comes with piston, gaskets, and athena cylinder. I'm gonna get the head all cleaned up to. Will it all bolt up? BTW my bikes a 04. Also is the little gold nozzle sitting next to the crank the oil nozzle upgrade?