I spent some time researching to find what I thought was best functionally and not just best bling. Also, some of the vendors will only sell you a full kit but I'm not convinced it is all needed.
FWIW I went with Larry Stock's cross braces. The rear attaches at the engine mounting points and the rearmost suspension carriers. The front brace is similar but has a true crossover and involves welding in the mounting brackets. These plus a good camber bar (one that extends far enough to butt against the shock carrier, not just bolt in the holes) should be enough I think.
The Pantera upper front trunk is a boxed section and really doesn't require any further rigidity, the upper front trunk braces just eat up what little trunk space there is in my opinion.
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