A few quick pics. I picked up a set of the 76-78 nosecone upper support brackets #527359. The 74-75 models used an earlier version #492636 which had a shorter slot, replaced by the later version.
I'm not sure who makes them, they were supplied by Firebird Central. Firstly, they look neat and dimensions are very good. I'd already spotted an issue straight out of the pack. The channel sides are a much tighter fold, not curved, may not be as solid as a result but both were flimsy anyway. Plain, no stamped details.
Firebird repro 527359 nosecone support brackets (2) by
Ben, on Flickr
Firebird repro 527359 nosecone support brackets (4) by
Ben, on Flickr
Here's the issue, the bend shown on a NOS piece. The radiator support on these cars is not vertical, leans forward, and the brackets should match this. Not only does this give an incorrect angle at the bolting face to the fibrglass inner support, it also sits the entire nosecone lower that it should be bu about the size of the already enlongated hole.
NOS GM 527359 Firebird 76-78 nosecone support bracket 3 by
Ben, on Flickr
And here's the repro just sitting loosely next to originals on my car. The bend doesn't loose quite as much but the repro was also balancing and not sitting quite as flush, you get the idea. Now to try and sell them.
Firebird 527359 nosecone brackets stock vs repro (4) by
Ben, on Flickr
Firebird 527359 nosecone brackets stock vs repro (2) by
Ben, on Flickr
