Reichardt greenfit is the best option. Here's what you need if it's a common cab. Also a legacy cab option for that model combine. You can see the notes on which one you need.
Kit number: 670514 The new-style Common Cab (introduced to the Case Axial Flow line during the 2013 model year) will be referred to as “Common Cab”. All other machines will be referred to as “Legacy" or "Original" Cab. Each cab has a unique vehicle setup and machine-specific harness, so it is important to determine what cab the system is being installed in for both ordering and supportive instructions. | 
Auto Steer for a 7230 Flagship combine.
