I did it back in 2003.
You can use the stock FD mounting points and make an adapter to mount it to the stock FC mounts.
If you are hellbent on using the stick serpentine belt with the FD cover then you have to revise the coolant lines to match an FC radiator.
I went single, too juch headache trying to make the twins work, I first went with a T04E then a GT35R, the later dropped my spool down and increased my WHP by about 80.
Run a Haltech, Megasquirt, Motec etc... and save yourself the trouble.