Technically the Prado is the 90 Series Toyota Land Cruiser, it's sold in almost every market where the 4Runner isn't, including Europe, Australia and the Middle East. in Europe it's called the Colorado. I understand there's a LOT of similarities between it and the 4Runner, but I couldn't tell you with certainty.
The best way to find out is to contact any shop that is a certified ARB/OME dealer. The OME dealer catalog is universal, which means it shows parts numbers for all vehicles that OME is available for, not just US-spec. If the coils are interchangeable, the parts numbers should be the same, or it might even have the dimensions. FWIW, the 4Runner is also called the Hilux Surf in some markets.
HTH!