Me too. We have to figure out how to adapt Jeremy's dyno flywheel to the ls flywheel. He has a 5.3 we need to dyno as well. This motor was an lq4 that I've swapped to an lq9. It's a little easier on the later model lq4's because they also come with the floating pin rods like the lq9. That's basically the only difference between the two, one has flat top piston and the other has a dish.