Jay, I THINK the chev blazers used 6 lug for a long time. Not sure about the years.....just a thought.
It seems the main issue is backspacing. I have some nice mag rims with about 4" of backspacing and I believe they should be fine with disc brakes. However, I also like the steelies with wide whitewalls look too and am undecided as to which one to use.
Anyone know how much backspacing is required for disc brakes?