Wheel fitment and backspacing issue

[STR8SIDEWAYZ]

Hey guys this question has probably been asked 1000 times but I cant seem to find a straight answer. I have a 2000 7.3 crew cab my plans for a wheel/tire /suspension setup is follows. I am interested to see if anyone is running this combo and if it is doable with the leaf spring spacing issue on the 7.3.
20x12 wheels -44 offset
37x13.5 tires
6 inch lift.
will I have any rubbing issues before I drop a nut on all of these parts and it not work. Thanks for the help!

 

[hunter scar]

My neighbor had 38's on a 6inch lift. he had some rubbing on the leaf spring at full lock. But the -44 offset may prevent that from happening.

 

[STR8SIDEWAYZ]

thank you for your imput I hope itll be ok