Rear torsion bars?

Was fiddling around under rear of squareback and noticed top of bump rubbers were about 1/2 inch off the stop. Would have thought it should be greater
than that. I suppose its conceivable torsion bars may have settled in last 43 years!. Went through all my manuals but wasn,t any specs referring to body height. Plenty referring to spring plate angles etc with suspension dismantled but not with the car on its four feet so to speak. Anyone seen any reference to body heights?. Bushes probably need replacing so its a two birds with one stone issue. Ta John
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.