Looking for self contained tail light boxes.

[QRTRHRS]

I need to upgrade the turn signal and brake lights on my flatbed. I know there are lights all set up and contained in a weather resistant housing. Just bolt the assembly on and wire it up. What I have in mind would be three 4" lights, turn, brake and backup. I found one at NAPA but the lights were only 3". LED lights in a chrome or aluminum housing would be a plus. Thanks in advance.

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97'3500 SLT CC,4x4,5 spd,4. 10,100k,EBY aluminum flatbed,Dee Zee running boards,Dee Zee Platinum drop boxes,Mag-Hytec,BD Brake,Pyscotty,Jardine 4",Geno's monster tip,TST plate,370's,AFC, ATS, Bilstein,Isspro, Tekonsha Sentinel