Finally pulling the trigger for the 5 lug conversion on my 03 EP from an RSX Base. Just wanted to figure out if the EP calipers would mount properly on the RSX knuckles/spindles. I know that they have different calipers when I looked them up, but there's not really much difference from what I've seen other than the bleeder screws are in different locations and the contact areas for the pads are shaped a little different. Just don't want to spend the extra money if I don't have to.

 

Did you find out? I'm going 5-lug also but staying with civic spindles. Thought i saw a whole ep3 /dc5 compatibility sticky or thread on here somewhere tho...
Did you get shocks or coilovers yet? Weren't you trying to decide that a while back? That's where I'm at while black friday deals last.

 

The knuckles are compatible, the wheel bearing and hubs were a different size which tripped me out. Still on lowering springs but the fitment is still good from when I had my 4 lug 17x7 with 1inch spacers. The fitment was almost exactly the same.