I will be following your build of the engine, are you going to change heads as well, as for the fuel tank, I would suggest you give Ron (RPM) a call, I have run two of his tanks (Aluminum and Steel) both of them work very well and built to the size we wanted 13 gal, room enough for tank, chairs, tools and some cleaning supplys in the 20" box. Ron could also help you out with the front brakes as well, give him a call. I havent even been working on our new build, its on the back burner for a bit longer, no time to work on it right now. Keep us up to date on your build.
Jerry