Tripped across this page and thought I'd share some info about the RA-V engine production that I got straight from Jim Wangers, Milt Schornack (of Royal Pontiac), and various Pontiac engineers from back in the day for magazine articles and book fodder.
Hopefully this helps clear up the confusion.
The RA-V was developed in 3 sizes: 303, 400 & 428. NONE were ever installed in vehicles on a production assembly line. Not even in Canada.
Super8 is correct: A few hundred 303 crate engines were built ... in an effort to certify the engine for SCCA Trans-Am series use.
At least 29 400-inch RA-V crate motors were built for sale through GM Parts Div.
No one that I've spoken with knew of any 428s that were built and offered for sale.
But Mike Ornellas is correct about the test mules: several were built (unknown number). At least one documented 428 RA-V test mule GTO exists in North Carolina. (I know the owner, but keep that info private.) And last I knew, the blue/white RA-V car was in Michigan.
But, basically, while the Ram Air V program was intended to go into production, it never made it further than the crate motor stage. Again, NONE were ever installed in production vehicles on a Pontiac assembly line. All cars -- including the test mules -- were hand-assembled in engineering garages or (as Super8 pointed out) by Royal Pontiac ... or anyone else who ordered a crate motor and installed it in their garage.