I'd take a pass; quality is unknown... I'd get a SPP upper arm, a product with known quality or if that's too much money, get adjustable camber bolts from MOOG, Eibach, and others. A while back, PEP Boys had some of these for $6 each.... don't know if they are still available. An adjustable camber bolt will give you about 3/4 to 1 degree movement in either positive or negative adjustment.
Poly bushings can squeak when they get wet and some people don't like the harshness that these bushing provide. I've had to put marine grease on several sway bar bushings to keep them from squeaking....