I believe what the seller is saying is that he had a 400 engine professionally built by Nunzi using RA III parts for $9500 that puts out 425 hp (also the suspension and tranny from Nunzi). I don't see anything where he is claiming that's an OEM setup. More punctuation in the description would have been very helpful. If I had a lot of time on my hands I would go back through my Hemmings Muscle Machines and find his article.
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement 2006 Mustang V6 Pony, Vista Blue. Factory ordered. 2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it) Old projects, gone but not forgotten: 1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it. 1980 Turbo Trans Am 1970 Mustang fastback, 351C 4Bbl, auto 1988 Mustang GT, 5 speed 1983 F-150 4x4, built 302 1994 Chevy K2500 HD 4x4, 454 TBI
