after some research it seems a 16" wheel is friendlier with caliper clearance than the 15" but still need to dial backspacing for clearance of frame/UCA's. Definitely hard finding threads in regards to backspacing/offset/steel wheels and 3rd Gen. caliper clearance.
Would like to possibly run a 15x8 steel (Crager, Pro Comp, Black Rock) D-window wheels but would like to know prior experience does 4.25" backspacing suffice or more toward 4.75"? What's a happy median? Will have Bilstein 5100's front and rear on stock springs with hopefully 285/75-15 - Rubbing...
in regards to passing the sniffer? as long as no CEL is on you should be good?
Running the cats at high temp for awhile prior normally helps if you think you'll be close