The Gorilla bar will sit awfully low with the 4' lift, as it mounts to the jack point under the transmission, and it mounts under the bushings on either side of the stabilizer bar. As it is, it runs on a straight plane forward, and is designed to mount under the radiator using the three mounting points. It cannot be bent, as it will affect angle in front. I have a 2" Scorpion lift on mine, and was able to use three spacers (originally designed for the heat shield above the CAT) these, and a slight bit of pressure allowed it to mount securely
I also have a picture of the completed project after it was wired up
I'm sure you will find a solution, seeing what you have already accomplished, Nice Job! I'd like to see a close up of the rear trimming, I know what you mean about the front rubbing though, after my lift I was only able to squeeze a 28" tire in there.