Here are some answers:
1) Surly Pugsley - Yes and hell yes. This thing looks awesome in there and I imagine for those folks looking for summer wheels (and 29er) this would be a really good option (and we'd love to build them up for you this summer).
2) Salsa Mukluk - In the front, yes, in the rear, it depends. If you have an older Mukluk (before this year) then it is a little bit tighter than we would like with clearance to the bottom bracket. With the brand new Mukluk's sporting the alternator dropouts you can make it work if you set the alternators all the way to the back. Also if you aren't running a 1 speed front - forget about using that granny ring.
3) Surly Moonlander - Much to our disappointment, no. While you can physically fit these into the wheel, the 28mm offset required for for Moonlander front and rear wheels, makes this a no-go. Due to the width of the rim, building it with a 28mm offset would make it a little bit too flimsy with some horrible spoke angles to get it to work. While I'm certain that someone will try this and get it to work, I will let them spend the money to test it our and end up with a ruined rim (and missing teeth).
4) Suspension forks (other then the Lefty) - Yes, there are 7,000 different forks and we have seen them all, but I can't imagine one with a crown wide enough for this monster to fit into.
5) Lefty Fork - Yes, I know some people who would love to get that done for you.
Here are some pictures from the experimenting.
|Perfectly fit in a Pugsley|
|Rubbing on the Moonlander rear triangle.|
|Rubs on the Moonlander fork.|