I did some research on those Diamond J kits and I would recommend against using them if you ride your bike hard or jump. Most who used them and ran their bike hard bent the mounts. I also read that moving the a arm mounting points further away from the centerline of your bike decreases stability. Many aftermarket frames, and the new Kawi's have moved the mounts for the a arms closer together.
This is all my opinion that I gathered from my research, I am not bashing the company or the product in anyway.
Wider is better isn't always the case, I wouldn't have believed it either until I read that write up. Even flipping your front rims for that extra inch is a bad idea according to this guys math. Are you currently running one of those kits?
Yeah but It's a copy version.I made it.All the same metal and that.But I plan on taking a stock set of a arms and adding to them with bracing inside of the existing tubes ofcourse.That way it's wider and the original pivot's are retained.