Nevada tank swop

Hi All

I want to buy another Guzzi having regretted selling my Breva last year. I want a small block, a V7 would be nice but still a bit too much cash. Small Brevas also nice but been looking at Nevadas. However, I hate the look of the tank.
Does anyone know if it is possible to fit a tank from some other Guzzi, like a Cali without too much trauma? I remember about 8-10 years ago someone on the IOM made a special from a newish Breva with a Cali tank, it was in Gambalunga but I can’t find the article. Any help appreciated. Cheers