1) Why do you want a RHD car for use on LHD roads in the USA? Because it's cool? Some people buy older RHD cars because those cars were never offered for sale here, and that I can understand.
2) Have you ever driven a RHD car, in either automatic or manual, on LHD roads? A) I'll let you in on a secret; it's difficult. You can't see around turns and corners, and it just plain sucks. B) Getting used to shifting with your left arm isn't easy either.
3) Have you ever driven a LHD car on RHD roads? See answer to
#2 part A.
I don't understand the attraction of driving a RHD car in the USA especially if that same car is made in LHD format. If you want to drive a RHD car, rent one in England and have a good time.