By the looks of the wiring that's on the tractor it is Guidance ready for a Deere Precision setup. I think a Brown box to a 2630 would be a pretty simple setup but I was wondering what else could be used, if anything, with the same harness using Ag Express adapter harnesses and a Competitive brand of Precision setup. 

I have a Raven E-Pro and also a Raven Cruizer monitors along with WAAS and Omnistar Receiver and Globes. I suppose something else would have to be obtained to make those work, just not sure what. Older Agleader Insight monitors with unlocks are on the market that might also work, if I'd know what it'd really take to make it work.

The Activation's for Greenstar are unbelievably pricey it seems to me. They really hold resale value but if I'm not looking to sell, well..............