Well the radius was designed to curve with either curved front bumpers or curved windshields to do an above or flush with roof mounting solution. That being said, a radius would not look right on the back. The back of the cab is flat. The radius is curved. If you really want to do this, get a 40" straight for rear facing, a 54" windshield mount, and maybe a 30" or 40" on one of the rogue racing bumpers. Hell they even have bumpers designed to hold two 40" radius bars. 1 54" radius above the windshield, 2 40" radius in the front bumper and a 40" out back will be more than enough.
I have 2 duallies in the back, 2 30" straight light bars on the front and 2 4.5" led light cannons up by the windshield. It is a ton of light. Its just right. Honestly the only thing I need is a little 45° lighting or "cornering lights". That could be alleviated with some wide angle duallies or some Baja designs cornering lights. Either way. The goal behind lighting is simple:
Basically you need flood for up close, cornering, then the next 3 forward zones. That's your ultimate lighting set up. 2 54's above the windshield will put alot of light in ONE area. Also you need to think about hood glare.
Its your decision, I can't wait to see the finished product.
My thoughts though with the radius, your beam pattern would be light this
My reasoning behind this is the radius is flood in the middle and spot on the outside. The areas x-ed out will be the areas that need help.
But if you are just using it to blind people, then yeah 2 54" radius above the windshield is plenty
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