Miffa, i have a couple of ideas floating round in my head at the moment.
1: Husaberg 650 supermoto into a cafe racer. done a lot of work on these over the years in my racing days. Husaberg are very torquey and very light in weight, so would make an excellent hooligan cafe racer. Roland Sands has done a few with KTM bikes, have a look on you tube and you will see where i am going with this idea.
2: Ducati 1100 monster.
3: Bandit 1200, but build my own frame for this one.
I have got quite a hole to fill now the CB has gone, loved every minute of the build and riding it.
My wife and i are in the middle of adopting so my feet are firmly planted with this at the moment, so time will become an issue.
I will of course keep the forum updated as and when.