Jim Osborn Reproductions Bosses 302/351/429 Book. If you’re a fan of the 1969-1971 Boss Mustang, or you know someone who is, it’s time to pick up this copy of Jim Osborn Reproductions Bosses 302/351/429 from CJ Pony Parts! This Jim Osborn Reproduction Bosses 302/351/429 Book is full of information about these famous engines’ specifications, features, equipment, construction, and more! This book is a great gift for anyone who’s a fan of vintage Mustangs and this type of engine. It’s black and white, and it’s 28 pages in total. Throughout the last 50 years, Ford has published extensive documentation on the Mustang. On earlier Mustangs, you might not have any idea where those books are, and the decals might be long gone. Replace both with one of the options available from Jim Osborn Reproductions!