just an observation but im pretty sure your shackles are on backwards. Leaf springs potentially hitting the flat flange of the shackle? But damn your trucks measurements are so much higher than mine and used the 2 inch hole and cranked my tbars i think im at 37 rear and 35.5 in front

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I guess it really doesnt matter which way they go on but maybe mine are on backwards?

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2004 XLT 4x4, Belltech 6400 shackles,Chevy leaf springs, Mildly cranked Tbars,stock blocks removed,265/75/16, Construction cap,