like the title says,anyone done a 5 lug swap on em1? im curious if im going to run into any problems or if its just going to go smooth.also im thinking of running ap1 s2ks for the rest of winter"4 fronts of course" and curious if they will fit good.

 

they should fit good with no problems

 

Done it. It's time consuming but fairly easy. Are you getting the 5 lug off a US spec ITR or Civic Type R?
If so there should be no problem with the EM1 axles fitting the 5 lug hub.
Your EM1 and the US spec ITR and Civic Type R all run the smaller 32mm splined axles. The JDM ITR uses a 36mm axle.

 

jdm 36mm but it coming with axles