Bobby - I read a lot about those tires and they seem to be really good, albeit a bit heavy like you said. Them being run flat is an extra plus. Thanks for the warning about putting them on, too!
Chris - I'm going to make it fast but I'm not going to mod it too too much. It's in nice shape and I don't want to hack it up. If yours will hit mid 30s then I'm hoping with better gearing, slightly taller rear tire, and some more power I can hit 40+. I guess I'll find out. Glad to know I got a good one also. I'm really happy with this bike so far. A top tank conversion would look great and I'd love that, but I don't know how to weld and I think this bike is too nice for that.
Now that I've caught the bug, after I get a few mods on this one I'm hoping I'll luck out and find an old beater for cheap that I can tear apart and build from the ground up. I'd definitely do a top tank conversion on an old beater. (edited)