"Invidia was a brand name that was offered by RS-R Japan around 1994. However, RS-R ceased offering the Invidia exhaust line by 1996. As we understand, the Invidia brand name was later obtained by another independent company with no relation to RS-R Japan." - First thing on RS*R website FAQ
Still looks good though. (I'm waiting for the RS*R ExMag GTII series exhast.)