Just picked this up a little while ago, guy said it was a Schwinn Sierra, it's certainly a Schwinn, and a MTB, but I can't find any info about any sierras like this.
Any info anyone could give me on it would be fantastic, especially the seat tube size! Nothing I have fits!
I'm planning on building it up as a touring bike, should be pretty nice
They weren't able to help me over in the MTB forums so I figured I'd give this a shot.

I've got what the guy I got it from said were the original brakes, some shimano exage stuff, doesn't seem to fit with the frame stylistically at all but I don't really know.