Has anyone tried putting the new "cylinder shut down" technology into and older Camaro to save gas? What is required? thinking about replacing the motor in a '71 .... I've done crate motors before, but how about the newer technology? I assume it would require wiring harness, CPU, injectors, sensors etc.... Are there any kits out there that make it easy? I need no smog for this car in California. Would like to save some gas but still get lotsa power. Ideas?