RPO code 348 (69 Firebird 400 HO) with RPO code 611 (ram air induction) IS NOT a RAIII..It is a PERFORMANCE OPTION.
Standard on RAIV, available on GTO and Firebird 400 models...either the RPO code 345 W66 400 or the code 348 L74 400 HO.
So is a "RA III" a 400 (345) or a 400 (348) HO?
L67 was the ONLY engine option available for the first design (67 and 68) with ram air induction AND without necessitating adding/including the 611 RPO option code on the billing history or PHS.. If you look at 67 and 68 (and 69) L67's were all ram air 400 cars WITH ram air induction. The RPO codes for 67 and 68 with ram air INCLUDED the "hot iron" hopped up motor AND the ram air induction (open scoops/pans).
The RAIV L67 was the ONLY engine in 1969 to include the SAME package (as in 67 and 68-L67).
Without the addition or designation of R/A 400 WITH L67 in the billing history, with or without the 611 is nothing more than a 1969 HO.
I guess that depends on what RPO code is on the billing history... Any "R/A" on a billing history, without the RPO 347 (L67) is not a true Ram Air car. If you look at the 67 and 8 models, RA, RAI and RAII were L67 designations...As well the 1969 L67.
Case closed.
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1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.