On my 05 it took me not quite a hour, that included doing everything. The hardest thing to do was tap the exhaust manifold, it just takes a little time. You don't really want to mess up when you drill and tap that. Just use a little grease, magnet, vacuum cleaner, what ever you prefer, to keep as much shavings as possible out of the turbo! It did take me a little longer to do mine for the fact that I mounted the display just left of the steering column, I didn't like the looks of the attitude on the dash. Good luck with your install, it really is pretty simple, I can remember when I have ever hopped up something that had these results and was so simple.
Snoxracer