Ron, I'm not sure what exact wiring harness would need to be changed to change it from a 350 to seedstar, but looking at parts probably $6-700 plus the $1330 for a wedgebox. One wedgebox will only do up to 24 rows, same as before. Stack them from there. Yes, in 2009, a Deere planter will plug into a Pro-600 in a Case tractor, or a Case planter will plug into a Deere GS2. This spring my cousin will be plugging their new White planter into his GS2 in his 8530. Compatable is not really the correct word. Sorry for that. These items are "compliant". | 
AgLeader Insight vs JD GS2 2600???
