I want to build something along the lines of this car.

the questions i have about doing something like this
Do you have any guides/information/books on how to set up the chassis with the leaf springs, how it is all done etc. What exactly is modifyed and what is left std. What aftermarket parts can be used, or is everything basically custom made?
What diffs are used, the ones in the pic look to be different as the track is so much bigger.
What chassis is the best to do for this type of modification? Is there any cars that this is just not possible to do, or is much more difficult then say another chassis.
I understand that this is not some few weekend job to complete, I understand that fully as i have been building my blubird for a few years now, doing basically all of it my self. (if you want to check out what i have done to my other cars please browse http://photobucket.com/albums/v430/SR910/ )