My 99 RKC has a K&N breather, Thunderheader slip ons (not true dual or 2-1), cam chain conversion with 21N cams and a TFI. One company said they would send out barrels and bore them and install SE pistons for $1940, taxes in. That includes port & polish included ($599) Another company suggested a more agressive cam or I would be throwing my money away. Also $300 for the bore, $1400. for headwork, a Power Commander (?$), dyno tune($?) and $250 to $300 for pistons. Don't forget labor. Serious coin, over 3 k by my estimate. The owner sounds knowledgable and suggested significant, reliable gains could also be made without doing the 95 upgrade or headwork by installing a compatible breather, cams, a Power Commander and some dyno time. Anyone care to share their opinions? Thanks for taking the time.