xr100 head

[AustinMoore450r]

im looking to get a race head on my xr100 does anyone know whats good and where to get it cheaper? im no where near being able to afford one of these takegawas for $1000 or more if you get a big bore and i cant find anything cheaper? does anyone know where i might be able to get a good race head used? or is there anything i can do to the stock head to get more out of it? will having it ported and polished and getting a hot cam or a web cam make a huge difference? what im really worried about is the valves being so small.... so if anyone has any ideas i want to hear them and if you have or know anyone who might want to sell a race head then let me know and im open to suggestions thanks.

[PlanetMinis.com]