Here is a thought
What if the American Mods took to the Morris Minor in a similar manner to how the OTL Hippies took to the Volkswagen Beetle?
In Morris Minor: The World's Supreme Small Car by Paul Skilleter, it is written that the only thing that prevented the Minor from competing with the Volkswagen Beetle was amongst other things the lack of a bigger engine as owners of the era (who later switched allegiance to Volkswagen) were crying out for a more powerful bigger-engined Minor (prior to the A-Series powered Minor) with various stillborn Minor prototypes making use of the 39-42 bhp 1.2 / 55-72 bhp 1.5 BMC B-Series engines, the 33 bhp 918cc Morris OHV engine from the Wolseley Eight (that was considered superior to the BMC A-Series with the same development potential as the latter along with the Ford Kent) and even a 90-110 bhp 2.5 or 2½ (pre-war) Riley Big Four from the Riley RMB & Riley Pathfinder.
Additionally, the Morris Major / Austin Lancer / Riley One-Point-Five (or Riley 1.5) / Wolseley 1500 was based on the Morris Minor floorpan (powered by 1.5 / 1.6 BMC B-Series) and even initially conceived as a possible replacement for the Minor, abandoned only because of the Minor’s unwavering appeal with the buying public at the time. A FWD Minor prototype with a transverse-engine was also developed and happened to possess superior road-holding to the standard version, which would go on to play a key role in the birth of the Mini (and ADO16 aka 1100).
It is also worth mentioning that in MG: The Untold Story by Peter Knowles, a 2-seater sportscar based on the floorpan and running-gear of the Morris Minor was considered known as DO926 or Midget Major (and was allegedly intended to be a replacement for the MG T-type Midget).
What if the American Mods took to an alternate Morris Minor, available as a 2-seater sportscar that in Series I/II form was powered by 1.2/1.5 B-Series and the 2.5 Riley Big Four (along with a 918cc Morris OHV / Wolseley Eight engine at the lower-end instead of the related 918cc Morris Sidevalve in the original Minor and pre-war Morris Eight), with the Series III being akin to the OTL Morris Major while the pre-war 2.5 Riley Big Four was replaced by the 1.6/1.8 B-Series (with the 1.2 B-Series being replaced either by the 1.1 / 1098cc A-Series or a development of the 918cc Morris OHV at the lower-end)?