[6BT 56]

Hey I may be late for the party but I can shed some lite on your wheel question.

I had 16 inch gm steel wheels all ready for my 56 with Dana 60 rear . My wife's 02 burb 2500 4x4 , likely same rear , or actually maybe even smaller than yours rear needed rubber for the winter .

My great plan was to buy nice new bfg at for the 80's gm 16 inch steel wheels , run em on the burb for the winter and then put them on the 56 in the spring and retire the burb. Got them all mounted up and ready to go and the dam rears won't fit over the calliper on the aam rear . Both rears are 16 inch but the gm aluminum wheel are cut out huge on the inside vs. the old 16 inch gm steel wheels . Hope I'm not being a party pooper . Just hoping to save you the poop I went thru .