[Coleman]

I put in a kit from CPP on my 68 K20. Its basically 2 3/16 steel plates that sandwitch the frame. IMO it's going to end up way stronger than just dimpling the frame. Just wander through the salvage yards looking at the frames of our vintage 4x4 trucks, you'll find most of them have cracks in this exact spot. I haven't had any issues with my setup yet.