There is a lot of plumbing in any car, race or otherwise. Race cars rarely use the same type of plumbing as street cars. This is an introduction to the issues involved in upgrading the plumbing in cars based on production based body shells. It is a work in progress; I anticipate that it will take me a couple of weeks to cross all the is and dot all the ts.
The most complete treatment of this subject was done by Carroll Smith, spread out through his "To Win" series of books. Most of the material appears in his Nuts, Bolts, Fasteners, and Plumbing Handbook. For more information on his books and how to order them, see Further Reading (which is linked below).