[SFfiredog]

The only cars that came off the Ford factory production line with a side oiler block are late '65 Galaxies ( very, very rare), '66 and '67 Fairlanes, and Mercury Comet/Cyclones, and the '67 and very early '68 GTE Cougars. Out of these rare cars, only the late '65 Galaxies, '66 and '67 Fairlanes and Comet/Cyclones had medium riser heads. We are probably talking less than 200 cars total.
One area of confusion, and I think where a lot of misinformation started was from the early '68 sales brochures and repair manuals show the 427 as an option available in Torinos and Mustangs. In reality, 427 option was never made availabe in '68,
The 428 CJ replaced it as the top engine for that year.
Aside from some factory test mules, factory race cars built by Holman-Moody, and the dealer installed 427 swaps the engine never made it into production cars. I kinda don't really count the Cobra in this tally because the Cobra was not built by Ford, they just sold engines to an outside vendor/builder, CS.
HTH,
Mike