My recollection is the same, they have been refurbished to a Zero hour state, as to what technology is in them, well the DOD keep pretty tight lipped about that.
How often have you seen a photo of the inside of a frontline tank or Radio vehicle if ever? I think I have 1 photo of the inside of a radio land rover from the last 30 years odd, because photos of them aren't allowed (or at least not published)
Back to the tanks, I wouldn't be at all surprised of the australian bodffins are steaking these tanks as much as everything else we have.
http://www.defence.gov.au/minister/H...CurrentId=4021
http://www.defence.gov.au/media/down...p/20060922.cfm