Anyone running 37s on a 6" lift?

I have a 2004 z71 and was planning on buying new 35s. I came across a set of 37x12.50x17 nittos cheap and need some input before i decide.

The guy i got the truck from has the bottom plastic part of the front bumper cut and said he ran 37s but I'm a little worried they are gonna rub or ill have to crank my torsion bars up then it'll ride rough.

Thanks for any info!