1989 Lincoln Mark VII breaks

I have a Lincoln Mark VII that the power breaks are not working. I was told I need a hydralic actulater and nobody makes them any more. Does anyone know where I can find one or if any body can fix the one I have?

You’re more likely to find an expert in brake repair at (of all places!!!) a brake repair shop.

Are you talking about a brake booster?
http://www.partsamerica.com/productdetail.aspx?MfrCode=A1C&MfrPartNumber=529391