I'm running the TNT full aluminum system and a PSC evap can skid. I'm not sure if the rest of the TNT stuff is compatible with what you're already running but I am happy with it.
Edit: Looking at that picture though the fuel tank skid should be compatible with TNT's trans and engine skids.
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2008 Unlimited Rubicon: 37's, 3" Synergy Springs, Artec trusses, 5.38's, Winch, PSC/Poly Cage, Bumpers, TNT Alum belly skids, and other doodads