What width wheel adaptor so not have to cut studs?

[Max-r95]

What's up guys? Quick question. Does anyone know how long our studs are on 07 1500's 4x4? Was looking at adapt it USA spacers and I'd like to try a set but don't want to cut my studs. Can I run 1.5 without cutting studs? Or get 2 inch to be safe? Thanks ! Couldn't seem to find anything on this. And can't really pull wheels and measure.