Porsche The 356 Porsche: A Restorer's Guide to Authenticity Book - Rev. IV 978-0-9297582-8-2 90261102200 The backing has a crosshatch

The backing has a crosshatch pattern

leading to reduced engine performance from poor combustion sealing

911 GT2 (2009)

Left Lower

meets all specification

Porsche The 356 Porsche: A Restorer's Guide to Authenticity Book - Rev. IV 978-0-9297582-8-2 90261102200 The backing has a crosshatchPorsche The 356 Porsche, A Restorer's Guide to Authenticity IV by Dr. Brett Johnson takes a part by part, year by year approach to what an owner or prospective buyer should look for when evaluating a 356 Porsche. For each year, from 1950 through 1965, the author examines every change, documented or not, of each model and now including major mechanical components. Included are the most accurate and comprehensive chassis number and color upholstery