where to get an adjustable cam sproket?

[Ron Wainwright]

  Listers,

  Need info on where to get an adjustable cam sproket
thought I seen an advertizment for like Blau or
2Bennett or some one
 problly going to re due the head cause of leaking
valve steam seals like a mother
 so was going to get a new Cam as well
 problly the Blau one what do people think of ther
sport cam?
  and I seen another post a little bit ago about going
to stiffer valve springs from Techtonics or some thing
can anyone be more spacific on that
 this is for a 90 200tqa 2 knock sensors
Thanks
Ron
90 200tqa 209k IA stageII,2.0 bar,20V rear brake upgrade

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