The spare wheel and carrier is a factory fit cost option and as some Pucks have it I assume it was available on them all. I can see no reason why the carrier can't be retro-fitted, but Puck production ended in 2009 and that may be why Dom doesn't feature a carrier for a Puck, they're just not available any more. I suspect it's probably the case that Pucks, being narrower than other Eriba Touring range vans, had a narrower chassis and that meant a different design carrier to the rest. I know some people remove the spare and carrier to improve ground clearance so they presumably are an easy remove/fit if you can find one. Asking on here/the Facebook page may be successful and looking out for dead Pucks/breakers is an option too.