Aftermarket patch panels or genuine GM?

[Number21]

I was talking with my neighbor who happens to own a body shop last night about the rust in my '79 cab. Surprisingly the corners look perfect, but in the rocker area I can see the street below me.

I was planning on ordering some of the patch panels for this area from LMC or somewhere, (haven't priced them out yet) but last night my neighbor was going on and on about what crap they were. He just bought a set to put in his '69 chevy in the same place.

On the other hand, they're just small relatively flat peices, I don't see how they can be as bad as he made them sound. I wouldn't need to replace the whole rocker, just the first 8" or so.

So I'm thinking, maybe I'll just go to the junkyard with a sawzall and cut out what I need from another truck? They have quite a few of them that I think would work at the local yard. Would it really be worth the extra trouble over just ordering some new peices? I know they aren't very expensive...but the local yard is.