I don't know much about rock music so maybe they were the greatest rock band ever - but the greatest pop band ever? No way. Most of the greatest pop music ever had already been made by the time the Beatles started recording and they could never compete with the likes of the Drifters.
I don't know man, I think you're going against mainstream. Which is ok, but not with regard to pop.
Which Drifters songs people sing today? I've never heard of them. I can not go a month without hearing Beatles song played somewhere.
Anyway, when I listen to early Los Van Van, I think they might do well in 60's UK.