rear axle

Hey guys, I'm hoping someone here has an answer or an idea to guide me as I desperately need it. TLDR; Installed new Shelby GT350 Half Shaft axles and the rear now feels loose under acceleration in a corner going about 60-70 (varies but around highway speeds) I installed new Shelby GT350...

All, I have a '19 Bullitt. It had an evap code, they replaced the sensor, which included them having to completely remove the rear axle, etc. Then it was slightly steering right at straight steering wheel. Brought it back, they said the back was tad out of alignment possibly after the axle being...