I have searched for the past hour all over the internet and can't find a measurement I need for a custom project I'm going to be working on over the winter and am fesh out of 911s to measure .

Does anyone have the measurement between the rear disc faces (where the rear wheels mount) for a 911??

I'm going to be doing some custom rear suspension using 911 rear swing arms and need to figure out if I can use the stock mount flanges in stock location or if I need to move them on a VW type-3 rear suspension sub-frame. Thanks for any help you folks can give!