i dont' think they were. http://www.howellautomotive.com sells PT 2.4 lash adjusters and rockers as an upgrade. so going from that i would assume that the PT valvetrain is more efficient.
i'm coming from the lang of non turbo 2g eclipses. and those are sold as an upgrade for that motor as well (420a)
i'm coming from the lang of non turbo 2g eclipses. and those are sold as an upgrade for that motor as well (420a)