Difference between heads hyd flat vs roller

The front. This is 3/8 thick. I believe 1/4 inch thick would have been much easier to work with/bend. My wife was heating the top and I heated the bottom. Used a Harbor Freight break to bend it. It fits tight to the hood. It was very important to use two heat guns. We also heated the break as we heated the Lexan so it wouldn't be sucking all the heat out. We didn't take any pictures while doing it. I will make a separate post of it..