This post at LS1TECH seem to be the guide that most of the people which I've heard have followed:
http://ls1tech.com/forums/11059703-post70.html
Given the blower, I'm guessing you don't have the valley cover with the attachment point in it (I can't tell from the pictures). So I would guess that you would follow the LS1 routing.
Hope that helps some. You can look at the whole thread instead of the single post for a lot of discussion...