I'm doing it, but technically I don't have a level kit but it is a 2-1/2" lift up front and pretty much no lift in the rear. A couple things you need to know:
1) the tires will rub on the controls arm just before full steering lock.
2) you need to use a small 37", meaning a 37" tire that actually only measures 36.5" or so, like a BFG A/ T. A 37" Toyo M/T fill rub big time.
3) with stock leaf spring and under full compression a 37" tire in the rear can contact the bed sheet metal.