[davepl]

I sure wouldn't go 2 inches, that's 4 inches in track width.

But I've got 1/2" spacers on mine to clear the hubcaps and I could have doubled them up for a full inch on each side. It does square up the look some.

It's totally arbitrary but I wouldn't feel comfortable going much more than a half to full inch per wheel. And of course you need longer studs and all of that.

Mine are 8-bolt and I got them on eBay.