Hi Chieftain Mk4,
(Sorry but as yet you have not posted your name), don't know where you are located but on 2nd & 3rd August 2014 in Heywood, Manchester we have a Tank running day at which there will be 2 Chieftains, 1 Centurion, a number of 430 series and I will be taking either my M578 or CET. You would be very welcome to bring along the Mk4 Chieftain as an exhibit. This event it open to the public with all proceeds going to a local hospice.
There are around 20 acres where the tanks run around all weekend. For pictures of last years event have a look at Heywood Tanks on facebook.