Ive just measured mine for you.
Front to back is 3ft,and you can hinge down the retaining rails to put longer items on it like planks.
Side -side is 2ft 10" min,and you can adjust the side rails to about 4ft, and gutter securing arms out to about 4ft 6".
It will fit on a Mini and a XJ6 Jag or Rolls.
Hope this helps.
And!!!
What about this cracker on ebay at the moment?
Doubt if you will find better unless its never opened!
Consider rechrome costs and replacing impossible to find damaged parts!!
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEWAX:IT