the S2000 disk has a 39.6mm offset whereas the other 300mm Honda disks have a 47mm offset.
To answer the original posters question without digressing ;
-Yes the S2000 calipers fit
-No, the discs wont fit the Ek4 hubs even when redrilled to 4x100-the offset is wrong
To do this, you need to use EP3 discs, redrilled to 4x100. The caliper will need a pair of 0.75mm shims between the knuckle and caliper carrier to get the caliper central on the disc, otherwise you can shave the inside of the carrier to get the clearance.
Good setup for not a lot of money, IMO.
Oh, and if you want to upgrade EK9 hubs to run EP3 setup you need to either
A) put the drive flange on the lathe and take a few mm off the outer diameter, or, use an EP3 drivelange
AND
B) open up the centre bore of the EP3 disc.
Easier to do the ATR upgrade tbh, disc goes straight on.