[quote=jellycow]I had the same tank on my 100GS, and now it's going on my G/S. Has your seat been modified in any way to take it?
What is on the bike is a Corbin seat and I actually haven't had a chance to take a good look yet, but I don't think it has been modified. It seems like the tank rests on the seat...
Here is a cool picture from a site with shots of 40+ Heinrich's and Hoske's