Both catalysts fitted - it involved removing the subframe, grinding off the I4 left-hand tranny mount, and welding in a regular V6 item. The V6 item allows the V6 bracket to be used, and is on a lower level, same as the right-hand side.

The raised I4 set-up doesn't allow a catalyst / down pipe to fit, as the distance between the floow and bracket's way too tight. Catalysts now fit perfectly, just need to fab up a Y-piece to link both catalysts to the 2.5" single Milltek.

Pictures will be up later.