I am building a motor for my sons 91 supra and was looking at egr block off plates.I have seen kits with 2 plates and with 3 plates? all I have seen says to remove the egr cooler plate at back of head and one plate goes on far side by exhaust. my 88 supra already had the plates on it but both are on the intake and it still has the cooler plate on it? I read that that causes heat buildup on cyl. 6? should that cooer plate be removed? Thanks for any advice. Brad.