As Dave and Tim have said , the only reason to replace your current wings with "originals" would be an insistence on total originality. The Superform wings are a much better option if you want alloy , and the Sid Watson glass fibre wings are a better option if you don't.
On a question of supply in Oz , I would imagine that getting the importer to add an order for 2 (or 4) new wings to his normal spares order from MMC would be easiest option. Although not heavy, the package to contain 4 wings and allow them to arrive undamaged will be very large indeed.
