More proof taken from the R/R GTX data/price guide. The 383 referenced is the 300HP 1971 engine that came standard on every Roadrunner that year. The 440 is next to it just for laughs. can anyone recall a member of the 1971 Satellite family that had a 300 HP 383? no mention of a 4 BBL Holley but that's OK it's just "incomplete" right? just like the factory parts manual. Is that an opinion?