HELP Need measurements of 10bolt & 12 bolt for 1st & 2nd Camaro rear-end

[chevyhector]

Hey guys, Can someone send me (or a link to a web site) the actual measurements of the 10 - 12 bolt rear axle from drum to drum for 1st & 2 nd gen Camaro’s. I have a project and I wanna have all measurements correct.

Thanks
Hec