I had a 2016 CTS-V before my Raptor. The LT4 was a bad ass little motor with torque for days and days. The run the same transmission we do in the raptor in the ZL1 Camaro with the lt4. I have always wondered how hard it would be to swap an LT4 in since the harness, ECU and TCM already exist. It sure would **** some people off putting in a GM motor.