1971 Mach 1 w/ C6. The shifter has a lot of play in it. The linkage coming off the transmission has a lot of play. Where can I get these replacement parts? I've looked at alot of websites but don't see what I'm looking for.

 

LMR has lots of small parts like that. YearOne, also.

 

National Parts Depot may also have what you are looking for.

 

You can also just measure the amount of play you think you have and purchase some bushings at the local hardware store. That is for the connection under the car from the shifter linkage to the shifter and from the transmission to the shifter linkage as well. That is what I did. Now if you have play at the shifter with it moving around a bunch that might not be anything under the car. I had this problem and to fix it I purchased rubber bushings after just guessing how much space of play there was and cut a slit on one part of the bushing and pushed it onto the rod that goes from the shifter to the pan and fixed up that space fast. It does not move around at all anymore.