Ok heres what i have a 93 EJ22 with dual port heads going in a 97 legacy wagon. Yes i have the wire harness/intake to make it OB2, BUT i need a egr port in the 93 heads is this possible? Or is this tapping for egr just for JDM heads?   I started drilling with a 5/16 bit in drivers side exactly were a 96 EJ22 with single port exhaust has the egr tube, and i found a water jacket before i found exhaust port?   Help would be greatly appreciated! Thanks and happy holidays