I bought it from PWR Australia, they had some suitable but they made some tailoring according to my needs. Here is some sort of dwg about it, sorry it is not good quality as it is just prnt screen shoot.
If I would make another one, I would swap mounting ears in a way that they are pointing "outwards", this would make it much easier to have cooler mounted and to install some std rubber boot between cooler and chassi. Now it was a bit tight to install rubber with those ears pointing s they are in the pic. This cooler has M30x1.5 thread connectors, same like OEM, so I bought short hoses from our host and made longer hoses.