Wow, Dallas....just...wow!

You should've dug a little deeper in my Flickr account - you'd see the Mondia I restored (did a thread on it last year, too, I believe)

IGH or not, I hope you enjoy this. And if you spread the rear end (can it go back safely?) to accept the IGH, you could do worse than sell off the derailleurs and make a goodly portion of your investment back.

The frame is most likely full 531, including stays and fork blades. If the BB is marked "35x1" it's French, although I understand a few of these had the extremely rare Swiss threading. Personally, I'd clean up the paint but not repaint - it's a fade, which helps to hide imperfections and anyway, it doesn't look all that bad the way it sits.

I love mine - converted for crap-weather with fenders and the like. Nice long wheelbase compared to my racier bikes, this one is very forgiving and easy on the body over hours of saddle-time. You're in for a treat (if it fits - that's a big-boy bike!)

DD