Before and after RA65 track calculations - could someone plz check?

[Stefan]

Here are my calculations for track etc. - stock with 5.5" +27 wheels, current with 7" +8 wheels, and new with crUZida brake upgrade (adds +8 each side) + 7.5" +22 wheels. red values are known, green values are interpolated.

I think my calculations below are sound - could someone tell me if this is right?

[CrUZida]

Stock offset = Stock track

Stock track + 2 * (stock offset - New offset) = New track


Its as simple as that.


EDIT: To include new brakes

Stock track + 2 * (stock offset - New offset + spacer thickness) = New track

Where spacer thickness is brakes.