Rep Power: 223

Read again. This is my current setup.

 
Rep Power: 223

Well, I guess if you meant doing the 5 lug swap then yes you absolutely have to change the knuckle. If you meant the K swap then no you do not have to swap the knuckle.

I also had to clarify my first statement. Base model RSX axles are the same as EP3. RSX base model knuckles are different than Type S knuckles.

 
Rep Power: 0

Sorry to revive a dead thread.

I have base RSX knuckles front and rear with the abs/speed sensors. Can I plug the RSX abs sensor's from the RSX front/rear knuckle into my EM2 harness and just call it a day?

Should I not do that and reuse the speed sensors currently in the EM2?

I have the rear disc's converted already from a '02 EP3, I used the ABS sensors from the EP3 and didn't have any issues (No ABS lights on dash.) (I feel ABS does kick a little prematurely after the disc conversion, but, the braking performance is still so much better.)

 
Rep Power: 223

Should work. RSX use the same wheel speed sensors as the EP3.