I first found this ultimate in-love-album For Real at the US Embassy Library here in Copenhagen ...and now I'm the proud owner of:
Ruben & The Jets, For Real (Mercury 6338 205, 1973)
Ruben & The Jets, Con Safos (Mercury SRM 1-694, 1973)
...otherwise I don't know anything about Ruben & The Jets.
The infomation at the Frank Zappa homepage is scarse.
And MicroSoft MusicCentral is the pits!
So if you happen to know anything please
contact me.
I've scanned the portraits of Ruben and the guys off 'For Real'.