Ditto, sorry to hear of your problems... But, have you contacted Aero Racing? Whilst it may only have a years guarantee, failure after 1000 miles implies either a fitting error, or a fault with the radiator.
Given all should still look like new, I don't foresee them disbelieving you.
I suggest you read this:
Consumer Rights Act In other words - they may still be liable, 1000 mile life for a radiator is not reasonable.
