I know there are posts on the 5 lug swap already but I have not been able to find whether or not I can use the knuckles and brakes from an 04-05 si hatch in my 02 sedan. Almost every part I've come across talks about rsx knuckles and lower control arms, but what is the difference between the 04-05 si that is factory 5 lug as well and the RSX?

 

Seems like an awful lot of expense and effort to swap all four hubs, rotors and/or drums, assuming the spindles are the same size, not to mention having to change wheel rims. I guess the question is why?