It's been awhile since I bought them so I can't remember all the specs off the top of my head. I remember the front segment was a little different then stock A-body springs but it isn't much. IIRC it's only about 1/4" difference? I have them installed on my 68 right now while I wait to get into the paint shop. I've got a set of old Rallye's on it and they look fine in the wheelwell.