Does anyone here have a problem with their rear end swaying or drifting while driving. Or tracking. Its like im hydroplaning on dry ground. Like when i hit groves in the road or painted lines. What could be the problem?

Properly installed Adapters wont cause this. You have other issues. Check for loose bolts and bad suspension bushings

It's possible that is caused from wider wheels/tires.. Did you installed wider wheels/tires with the adapters? Wider wheels/tires will cause your car to follow the uneven road surfaces even more often.. Does it happen at speed or all the time? Does it happen on flat surfaces or just uneven surfaces?

@hellz_wings yes to all 3 questions....

1: Did you torque the bolts on your adapters properly? Recheck them all just to be sure.

2: I assume that it just happens all the time.. It's possible that it's because of the wider tires, they tend to follow the grooves alot more.. Is your car lowered? Rear end centered? If not, you can get an adjustable panhard bar to re-center it which is what typically happens when you lower these cars (some people have reported that their stock height cars aren't perfectly centered as well).

3: What are your alignment specs?

4: LCA and PHB bushings are all intact?

The problem may have been there before, and possible more pronounced with the wider tires.. Hard to tell..

Several things cause this issue called "tramlining". Lower profile tires, softer tires, harder sidewalls, wider tires. Anything that doesn't allow the tire to conform to the uneven surface will make this issue worse. You can't beat the ride you get from stock sized tires!