WHEEL ARCH MOLDINGS?

[Big Chip]

Didn't duallys have the fender trim around the wheel opening?

No

 

[Bullmoose44]

I just installed a set from LMC on my 80 K10. They said it was for fleetside, but it fit fine on my stepside. I had to cut a short piece off the cab side trim to match my fenders, but fit the opening okay.