Rat rod help please

[Diesel boy]

I'm planing on biulding a rat rod using an engine simaler to the one in the link below, but I don't know how to choose a supercharger that fits properly. I am also looking for body ideas, for a frame I am using either a f150 or ranger frames. I would like to make it street legal also so please any ideas, or suggestions would be appreciated
Thanks

http://www.youtube.com/watch?v=bsU6_YIZhH4[/YT]