Hi all! I've perused many of the faq's and threads but need far more info. I've started to collect parts as i go like lowering,links,yoshi cams and cdi box and some ferrea valves.I would like to Know: -valve springs DRZE acceptable'reliable -FCR 39 or 41,mm Then big thing is new or used. Rebuild kits are 150. -type pipe FMF or Yoshi -Big Bore Athena? There is suggestion they have larger waterjackets for cooling and supply cylinder alleviating problem of sleeve etc. Lastly These DRE kits would be necessary? VCome with cam chain,adjuster valve seals and springs. I know lot questions but live in Canada so price concious and will soon have time to get er done. any and all ino greatly appreciated.