I had joked about where did they get that Puerto Rican Adam Ant to play Johnny the Boy (the, "Hey, man..." talk in the last scene) since I first saw it, figuring they got some Bx PR-ish type to dub him.
But I don't recall noticing any difference in his voice in viewings all these years since (which is every time it's on tv), nor in the soundtrack, which Brian May's original had been described as "odd, angular, percussive...," so I have to watch the dubbed one in total to hear the music as well to see if it rings bells.
I do have a DVD with both versions, but it's stored with the gazillion other discs I bought when Barnes & Noble did its annual 3 for 2 sale. That was when I had my apt which I was hoping to move from, so just stored em at the house which I'd be visiting during the sale and so they piled up over the years in the basement with a ton of new LPs, etc.