Exhaust systems

Does anybody know where to find technical information about building an exhaust system. Book, URL or others.

Scientific Design of Exhaust & Intake Sytems, 3rd Edition, by Philip H. Smith and John C. Morrison. ISBN 0-8376-0309-9

This is an older book originally published in the 1960's but the information and theories are valid. This book will not tell you how to make an exhaust system but will provide valuable information on what is needed for you to design an exhaust system for a particular engine combination (compression, cam, etc.) Very interesting reading .... but dry.

you can also go to racingarticles.com and look at a VERY good article about headers. the information in the article applies to the entire exhaust system, not just headers so check it out.