I used to watch the show in Puerto Rico back in '87. From what I remember, it was decent enough for me to watch religiously. But then, so was anything with transforming bots. The show seems to have never made it to the US. It was aired in several Spanish television markets, but that's all I know. You can catch a couple episodes on Youtube, but as for finding it on DVD...good luck. In fact, if you find a true DVD release of it, I'd be interested in buying it as well.
Dorvack Intro on Youtube...