Need P&P recommendations (or Mach1 instead)

I just bought some 01 heads and I want to get them P&P'd before installing them. Any recommendations?

Also, I am not an expert on heads (or engines for that matter), so what
should I look/watch out for?

Or should I sell the heads and get a Mach1 engine from KarKraft instead? I have heard great stuff about those engines and my car has abt 77k on it.