Head Work

[Larry Augsburger <71564.2244@compuserve.com>]

 Ok, I have decided to rebuild the head on my 5000cstq. I intend to do a
performance rebuild. I already have a modified turbo, charlie smith wastegate
spring.  So far I have been told to go with over-size valves, brass valve guide
?seals?, and a 90-91 10v cam. I have called numerous reputable machine shops,
and they all say "Well, I have never done it before on that head, but I'm sure I
can."  Could I get some feedback on what works best:
  1. What size oversize valves? Any reliability problems on valve seats?
  2. What is the best cam to use that still has a reasonable idle?
  3. Anything else recommended (port matching to intake/exhaust manifold, etc.).
  4. Could someone recommend a shop, please.
Please include as many details as possible so I can be sure to get this done
right.
Thanks, in advance for the suggestions.

Brett Augsburger