I believe my 02 SC has EGR as well. I thought it was only the variable valve pathfinder engine that lost EGR, because they used some overlap to do the EGR function across the top of the exhaust/intake stroke? (ie hold the exhaust valve open for a split second longer at the beginning of the intake stroke to pull exhaust back in?)

Also - I noticed the haynes manual has an entire section devoted to EGR (pg 6-24 to 6-27) on the 4 and 6 cylinder models.

With regards to the extra 10HP... I wonder if they put the SC model exhaust and injectors on it? Would help gain some HP, plus they would reduce parts count across the 6 cylinder models as a possible costs savings..