Bed repair panels

[FlameOut]

I was looking to get a few panels to repair some rust on my short bed, but all I can find for the rear lower repair panel is a longbed? Do they even make a shortbed panel for this, or do I just need to use the longbed panel and cut to fit? Example here

I'm also going to order a door shell and fender (which I have been trying to order for 2 months locally and I keep being told it's still on backorder - I cancelled it today)

It looks like I can actually order the AMD (Tri-Plus) parts through Summit Racing for a cheaper price then anyone else, and since I'm only an hours drive, just pick them up. Just need to find that short bed panel somewhere. even LMC only lists the longbed