Maybe they were only sold in Canada, but I bought a rusty 68 Thunderbird about 15 years ago, from the original owner, that had the standard bore 428 still in it, as well as a "Q" in the VIN tag.
428 powered Fairmont drag car, Best ET:10.03@132.11MPH, best 60 ft: 1.29
59 Meteor 2 dr. sedan 332, Ford O Matic
74 F350 ramp truck 390 4speed