I have a few arc mate robots, 2 on rj2 controllers, 2 on rj3 controllers, and 1 on a rj3ib controller pre ipendant. All 5 are running lincoln powerwave 450 welders and synergic 7f wirefeeders. I also have 2 arcmates on rj3ib controllers with lincoln powerwave 455m welders and powerfeed 10 wirefeeders. I am wanting to know if I can upgrade my 5 older robots to newer lincoln welders and wirefeeders like the 455m. Any info will be greatly appreciated. Thanks.