You guys are a hoot

I'm doing some research on roll center and bump steer. Stock metric is 13", Speedway sells one 14 3/8, and I know there is a 15'" out there. Evidence is pointing to Cam
Aro, but I'd like to know for sure.
Thanks guys.
First edit; Never owned a Camero or a Camaro, Just old Impala's (66s) and a '68 She-vell. Sorry to all the Camaro fans, my fingers outrun my brain on the keyboard.
Second edit; You guys are OK, despite your sense humor. ;>)