I got trigger happy with the order. I have pulled up those tires on Dennis Kirk's site so many times, it was gonna happen at some point. I'll measure the gap between the fork lowers when I get home. Everything I've read says it's a bad idea to put a tire that wide on a rim that narrow, but I think form over function won me over here. If it doesn't fit, I'll use the new 3.50 Duro rear tire that came with the bike up front. It may handle like a greased pig, but we'll see...
*edit - I can always use one on the rear on my 750.