I think hardcore diesel had one done! My dads got a unique set up on his 550 with self air leveling suspension and what not and makes it a pain so i think we may end up needing custom 5 inch made for his as far as the tail pipe area... But any other cab chassis should be good to go with a regular 5 and just need that extra length..
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07.5 6.7 2500 G56, leveled on MTZ 35's,B-MAXX,mp-8,MODDED RAIL, WILDcard INTAKE, ALL NEW WCC T-BARS, AFE BOOST TUBE,DiPricols-x3, All Amsoil fluids,6k HIDS, HUGE THANKS TO WALLY @ FTE DIESEL for many parts! and SPOOL'N sum LOVEFAB TWINS