Jim, where you took my quote out of context yet again, let me reiterate.

Jim Mattison of PHS confirms that no matter the wording on the invoice, the car was built from RPOs, and RPO 348 and 611 are required to have a Ram Air Firebird (except Trans Am). The line workers NEVER saw the invoice, only Broadcast Copies with codes. And build codes are build codes, not subject to interpretation.

If only 348 is present, that is the engine RPO, and that is a 400 H.O.

Now...does anyone have, or have docs for, one of the hundred or so non-Trans Am Ram Air IV Firebirds? 347 also does not specify the fresh air induction package as part of the engine option. That would be incredibly strange to have a Ram Air IV without pans...