EDIT: Misunderstood your question. My bad. I am pretty sure they will clear. Dont quote me on it but I believe it was the Phase 1 heads that couldnt be cleared without offsetting the up pipe.hay i want to know would a perrin up pipe clear Phase2 RS heads with a wrx/sti cross member swap on it as well.? im thinking of getting one but dont know if itll clear my heads.