Looks like my passo wheel is close to the front wheel arch and the driver side is further back, assuming the axle is on an angle? Lowered with SL leafs not too low at all. U bolts look like they haven’t moved is this just a standard leaf spring design failure? 650hp manual 

fairly normal for the open diff and leaf suspension setup to be a little off like that... if it's not touching, it's not an issue... also, if you think it's a problem take it to a suspension shop and get them to see if anything is awry.

Seems from front hub to rear hub is 3100mm on both sides, driver side is 658mm from ground up to top of arch and passenger is 670mm from ground up, is lowered on kings SL. Thought the fuel tank was on the passenger side and it would be the lower side as it’s full of fuel.. maybe the tub is out of alignment not the axle?

that's entirely possible...