Crank pulley is it ok

Got this apex crank pulley for an sr20det and its smaller than origonal will it be ok it fits on the engine.
http://i758.photobucket.com/albums/x...4/phone024.jpg



http://i758.photobucket.com/albums/x...4/phone041.jpg
this is it on.

it shud be ok but you will need shorter belts and it will be turning the other pullys at a fiffrent speed to standered (slower i think off top my head anyone with knolage of superchargers will no)

also id do this for looks and maintance
http://driftireland.com/showthread.php?t=4736

The pullys P/S and alt will be turning slower

Will it be possibly to slow and not charge my battery and to slow to work the power steerin.?

id say its smaller to stop the water pump working too fast when revving real high,although yashio factory do a water pump pulley that stops this?
what advantages did it say on the website ya bought it off??:rolleyes:

Have it that long i honestly can't remember it apex performance i'll see if it say's antin on there site