Despite rumors to the contrary, probably not. We have confirmed that the earliest known 1969 R-code Mustangs were indeed equipped with "Shaker" air cleaners.
A frequently asked question
Kevin Marti confirms that the records his company has licensed from Ford do not include any 1968 Mustangs equipped with a "Q" engine code. The VINs I've seen for alleged Q-code cars have all turned out to be cars that originally left the factory as C-code (289-2v) cars, meaning someone modified the cars and altered the VIN - and that's not legal.
The 428 Super Cobra Jet engine was first available in 1969, exclusively available when ordering either of the optional 3.91:1 or 4.30:1 rear end gear ratios. The Super Cobra Jet included a number of reciprocating assembly changes to stand up to the rigors of drag racing, including beefy capscrew connecting rods, cast pistons, and a crankshaft, flywheel or flexplate, and harmonic balancer distinct from the standard 428 Cobra Jet.
Finding the word "Super" stamped on some Cobra Jet blocks has led some people to believe that the block is a high nodular iron casting or is somehow otherwise stronger than other 428 Cobra Jet blocks. According to several sources all 428 Cobra Jet, 428 Super Cobra Jet, and 428 Police Interceptor engines were assembled on the same production line and this stamping helped identify engines whose bottom ends required Super Cobra Jet components.
In late December 1967 (date code 30M), Ford produced 50 Wimbledon White sportsroof Mustangs with black vinyl interiors for drag racing duty. The vehicles were numbered sequentially, starting with VIN 8F02R135007 and ending with VIN 8F02R135056.
While it's true that most 428 CJ carburetors used an automatic choke, the 1970 carburetors used a manual, cable-activated choke. These carbs can be identified by casting numbers D0ZF-9510-AA (4-speed without air conditioning), D0ZF-9510-AB (automatic without air conditioning), D0ZF-9510-AC (4-speed with air conditioning), and D0ZF-9510-AD (automatic with air conditioning).
While it's true that most 428 CJ distributors used a single set of points, the distributor used for 1970 4-speed applications was a dual point, dual vacuum advance distributor. This distributor can be identified by casting number D0ZF-12127-C.
According to Ford production records researched by Kevin Marti, Ford produced eleven 1970 Mach 1 Mustangs with a 428 CJ engine, 4-speed transmission, and air conditioning. All were produced fairly late in the model year, with eight produced at Dearborn, one produced at San Jose, and two produced at Metuchen. Five of the cars were Q codes, and six were R codes. All were equipped with 3.25:1 rear gears; two were limited slip (code "R") and nine were open (code "9"), and only one was equipped with a factory tachometer.
Please note that there is no complete registry listing published on the registry web site. There is a photo gallery of member vehicles, but registering your car doesn't get your car listed in the photo gallery -- you must create your own gallery entry. Instructions for creating a photo gallery page can be found on the gallery info page.