Replace all the missing SAI parts or replace the modules with those from a non-sai truck. If you live in a emissions testing area your only passing option may be the SAI parts

 

 

Youll need an ECM/BCM combo from the same truck . 00-04 will work. Make sure the its the NNN 460 ECM not the 640. You want the matching BCU to aviod immobilizer issues, Swap them out and turn the ignition key to position 2 without starting the truck. Then turn the switch off for a couple of mins. Should be ready to go. Drive for 10 miles or so....check with scan tool that all monitors are ready (one not ready is ok and the evap will not be) . Go pass emissions right then because you may still get some codes within 40 miles or so.

 

 

 

You can ask for the matching speedo as well or you will get a flashing odometer warning(mileage will not change). And you cant sync with out a diag. tool like nanocom and then it will only sync to the higher value. I swapped mine out ,passed emissions then swapped the originals back in because I wanted my key fob back. Ideally a matching set that included the fob would be best but I couldnt find that in a 460. Most 460 parts come from 00-02 4.0 rigs. Its rare to find a non sai 03-04 4.6 rig.....that said the the 00-02 will work.

 

There is a compression # and serial # to the left of the dip stick.