65 Barracuda - Advice on where to get stuff

65 Barracuda - Advice on where to get stuff - door trims, carpet etc

jeff alder said
1964-1966 PLYMOUTH BARRACUDA 4 Speed Trans. CARPET PASSENGER AREA - ANY COLOR | eBay you can get most of that stuff on EBAY...

Is it worth buy8ng the rear cargo area carpet, or is it simple enough to make from any carpet supplier ? I need the mould3d for the cabin, but the rear area just look like flat sections.