Location(pic from the web):
![](http://img.photobucket.com/albums/v33/Snowtoy/Other/22reKSlocation.jpg)
The ecu needs to receive a signal from the KS above about 2k rpms, w/o receiving the signal, the ecu will go into "safe mode" to prevent engine damage. This safe mode will reduce performance and likely drop fuel economy as well. Is there a spot cast in the block for the KS, that you can drill and tap?