https://www.darksidedevelopments.co.uk/products/darkside-front-mount-intercooler-kit-fmic-for-vw-passat-audi-a4-1-9-tdi-pd130-avf-awx.html
If it's just for show just wack one in the front grill and dont plumb it in as it will make next to no difference to power unless you are pushing hard for high HP. So until you have exhausted stage 1 there's plenty of better things to spend money on.
11 litres of subaru intercooler jammed in the grill here: