Dave: Now I believe I understand what was done to the 93 K1500. The 5.7 liter fuel top half of the throttle body was used on the lower half 7.4 liter portion of the throttle body along with the "Cop Car" 17084327 injectors from same. Very clever idea. Already have 17084327 injectors on order from Ebay. Would like to do the same as you have done. Mine will be going on a salvage 5.7 liter Vortec engine. Is there a binary file available for this combination? Please advise. Thanks.