I am looking for a one piece floor mat to go in the 2nd (and 3rd & 4th) row positions in an E350 passenger van. I have a nice mat that came with my '03 F350 Crew cab truck that fits the bill perfectly. It is a OEM mat that is heavy duty rubber. It is one piece that goes across the entire back floor. I have tried it in the van and it fits perfectly (except in the 3rd row which is narrower because of the wheel wells). I have been looking online for something similar in an aftermarked product, and I can not find anything that is a one-piece design. I have found similar OEM mats on eBay, but they only come as a full set for the trucks. The OEM part number on the back mat in my truck is XC3J-2813106. Can anyone point me to a similar one-piece aftermarket mat that will work in my van?

Here is a link to the truck set on eBay;

2004 2005 2006 FORD F250 350 ALL WEATHER FLOOR MATS BLACK 3 PIECE SET | eBay

Thanks!