Honda Repair: 1999 2.7 L. V6 honda passport, vacuum leaks, honda passport

Question
  I recently repaired a passport after overheating. The head was cracked on the pass. side and replaced,the driver side was fine. All usual gaskets and seals replaced. The vehicle runs ok but the owner stated the vehicle does not run like it used to (lacks power). Plugs, wires, fuel filter and a fuel inj. cleaning has been performed recently in the past. Compression is within normal limits. No vacuum leaks detected. I had to set the timing on the pass. head. The reman. head was not set and i has to reuse the cam driver gear assy. from the old head. I have access to alldata and the picture for setting the timing was not clear. I wonder if I may be off a tooth one way or the other on one or both cams. I am having difficulty getting a accurate picture on the timing marks. What do you think and can you help me?  Thanks.  

Answer
John, I'm sorry but I can't answer your question. I'm in Canada and have never come across one. What I can tell you is the Passport is 100% Isuzu and not HONDA. Refer to my link http://en.wikipedia.org/wiki/Honda_Passport for some info. Try an  Isuzu tech. Sorry again, RICK