Facts I know:
2003 Civic Coupe
Engine swap in process

swapped EP2 subframe for EP3 RSX subframe
bought RSX lcas
Bought RSX knuckles with 5 lug and brembo brakes (all round)
Ball joint in knuckle has larger diameter than ball joint that cam with RSX lcas (i think they were 2003) and lower bolt through lca is too large to go through the control arm

I am guessing (do not know for sure as I bought RSX Brembo kit on ebay) that I have 2004 knuckles....

so I am having a hell of a time finding the right ball joint.

My options, I think
get 2004 lcas to fit knuckles so that ball joint fits both correctly
find some hybrid ball joint 43mm at knuckle and 16.5mm at lca (do not know if this exists)
drill out lca so that larger diameter ball joint fits through lca (18.3mm =/-)

any suggestions