When my car warms up to normal operating temp, if I go to 4k+RPM, it will nudge back and forth with power, then without, then with, for about 2kRPM, then it loses that nice pull of the 2.5L. I have searched and read numerous posts on this and have figured that it's my IMRC.

Where other than a Ford dealer can I get one of these? Does Terry Hanes carry them? When will Bill Jenkins be back in business... and can I get one from him? Any direction as to where to go guys?! Any help would be great. Thanx in advance!