Aftermarket a-arms. Super ATV has them and they are reasonable. The top ball joint is adjustable to correct the camber. I know they have the ones that put the wheels forward 1.5" call them to check on other options.
I don't see any reason they won't hold up as I used 1/2" rod. I just did it last week and only put about 10 miles on it this last weekend with no problems. Most all the pressure is on the outer end of the A-arm from shock out to ball joint and thats not changed in any way.