Caliper wanted

Does anyone have a front right hand side brake caliper for a S13 for sale?
Mine rattles a lot and it seems that the centralising pins/bushes are worn. Anyone had this problem before and are there any ways of rectifying it.

get new pins/bushes from nissan???

or get a new caliper?

I phoned them and they dont seem to sell the bushes, might have to send the caliper in and have bushes made up.

A temporary fix would be shimstock.
But new/made up bushes would be the best.

I have a set of front calipers with pads.