Wilsons Sandbox

There has been a lot of talk concerning riding gear on the list lately. Unfortunately for me, most of the talk has been concerning synthetic materials. I need some advice on matching my current jacket with some pants. I wear a Heine Gericke Paris/Dakar dual sport leather jacket with a zip out thermal liner. The jacket is 10 years old and still looks almost new. (But it's been through several bikes and several states) Works great in all weather. I have used it many times to cross the desert from California to Phoenix. It is a great coat and I don't want to give it up. My problem is finding some pants to go with it. You see, I'm about 290 lbs and 6'3" tall. Leather pants aren't really an option. Not only is it impossible to find my size, but I would look terrible in them. (No over zealous vanity here). I need a good riding pant that will fit over my street/work clothes and still go with the Paris/Dakar leather jacket. I don't really want to look like a fashion terrorist. Anyone have any ideas on where to look, or what to look at? Thanks, Jim Sherlock