2007 Azera LTD - Leather upgrade help
 

I have only one complaint with my Limited and that is the "leather". I have found a kit from Katzkin that says it fits and replaces factory cloth in a GLS/SE but not leather.
I can't tell the difference between the GLS cloth seat and the leather besides the obvious power/heat/controls. Does anyone know if there is any dimensional/foam cushion shape difference bewtween the 2 trim level seating?
No one has been able to definitively tell me (including the dealer) what if any the difference is. I want real quality leather.