I spoke to the guy "Kevin" who owns the rig. ECM has the vin from the donor 04 Chevy 2500. It only has one set of o2 sensors and no cats. Plot thickens because it is also a rebuilt title. He isn't required to have emissions so he has never had to pass it. As awesome as the rig looks (he emailed me build pictures). Too many variables for me to drop this kind of coin with the uncertainty about passing emissions which is a requirement where I live.