Edit: Just realized I get wordy late at night. Sorry about that. Also I don't remember where I was going with the or in the title.
I'm kinda trying to decide what to do with my Forge. It really is a good bike and I am happy with it for the most part. I don't like the Manitou Black that I have for it because it is way undersprung for my fat ass. ATM it is still stock but with a ridiculous set of BBB Freebars. Its like 2.5 inches of stem rise and another 2.5 of rise on the bars so pretty damn high. Its fun like that but now I feel like there is to much overlap between the Forge and the Shadow.
I am thinking about doing a 69r SS coversion. From what I gather, since the bike is designed with a fork with an A-C of 454mm so I would need I need a rigid fork with an A-C of about 425mm to keep things the geo about the same. Does this sound right? What is the minimum A-C to clear a 29in tire? Just want to know so I can think about how steep (or not) I want to go. I am also thinking a no rise stem and flat bars are the way to go with this to keep the front low.