Originally Posted by ZSK

I think the 4.2 V6's are still a cable activated throttle maybe 2008_XL can chime in on that one. The 5.4 is obviously a drive by wire throttle body, you'll probably have to swap your throttle pedal and sensor onto the 06 assembly if that's the case, or seperate the two assemblies. The firewall "should" already be set for the manual setup.