Welcome to Zilvia, I see your recent join date. You should post some photos of the Varietta! I'm not an RB guy myself but a google search yielded some good results. Seems like a Greddy manifold will bolt up but might have some fuel rail issues and need to upgrade your throttle body.
FYI, Zilvia tries to consolidate these small questions all into one thread. Please use this the next time you're asking a small question:
http://zilvia.net/f/showthread.php?t=297481