Some pipes to go with are Pro Circuit, FMF Gnarleys, PT mids. If you like a little more of a top end hit go FMF Fatties, Toomey T5's, PT revs. Good mods to start out with would be the pipes, aftermarket air filter, cool head with smaller domes (20-21cc if staying on pump gas), Timing plate set at about +4. Then go bigger carbs, porting and maybe a stroker crank.