Td5 wont work without a bit off faffing about as it has an inlet on one side and outlet on the other, unlike the tdi with them both on the same side. I.e rad would be in the way on the drivers side.
I've fitted a universal one on my 6bt project and drilled a hole in each wing for the pipework.
I think the ones with the ports on the same side are known as duel pass, have a look on ebay for one that will fit the space.
That's what I'd do, as the ones from the likes of Alard are silly money.