Hello when i bought my car it already had an aftermarket grant steering wheel in it.... I was wondering if i need any parts to put a stock one back on. thanks

 

Provided the original steering wheel has the wire with the spring still on it, its as simple as pulling the steering wheel of by spinning the horn button to release it from the retaining clip. Than you can access the nut than you take off the wheel and the mounting hardware.

This would be the backwards of my aftermarket install.