No such animal as an EV RAM yet, may be available at the end of this year in the USA but no timeline for here ATM.
Walkinshaw Performance is doing a brisk trade converting ICE Chevy Silverados and other yank trucks to RHD, I guess there is no reason why they couldn't do a EV Silverado, F150 Lightning, Rivian RT1 or even Elon's unbreakable Cybertruck. By the time you converted some of the high end models I guess you could have a price tag of $240K.
