There are two different styles of power sunroofs that fit into the 05. Webasco makes one that opens out like a wing, or Inalpha makes one that is more of a normal looking sunroof.
I installed one of the Inalpha units in my Redfire GT. I like it. Works great, looks good.
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If I had to complain it would be that the panel is a little bit flatter than the rest of the roof, so it flattens out the roofline on the sides of the sunroof, and then pinches the metal (very slightly) at each of the 4 corners. The interior looks great. It slides, pops up, closes when you turn of the key, etc.
We liked it enough to put one in my wifes Blue GT