I like both grilles, my first 400 was a GMC also. It's a tough choice between a Chevy grille and the GMC one with a billet insert.
I got the brakes installed, exhaust gasket put on and possibly fixed my power steering pump leak. The line on the back of the pump was finger tight, I'm hoping tightening it fixed the leak.
Old grooved brakes
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New brakes with painted calipers, went with black instead of hooker red this time, didn't want them to stick out.
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The frame needs a little work, with a wire wheel and some paint it'll come around. I'll do that when I lower her or get tired of looking at it, whatever comes first haha.