PG Classics...BE&A...Roseville...all sell the same woodgrain. PCG(Performance Car Graphics) sells one of their own.
There are differences between the two. The panels that Roseville sells are shipped flat and you have to bend the edges yourself. You also have to reuse the thick metal backing that is behind the original woodgrain. The PCG part comes prebend and also comes with new thick metal backing already attached.
The PCG parts are the closest thing to original on the market but have a couple fitment issues that I've heard of. They are also a lot more expensive then the ones Roseville sells.
The PG Classics/BE&A/Roseville fascia looks nice but isn't factory correct looking. The brown paint around the gauges isn't the right color...the woodgrain isn't exactly right and I had some fitment issues as well. Depending on when your 73 was built, the switch panel might not be worded correctly either.
Sometime in 73, the switch panel wording was changed and little "headlight" and "washer" symbols were added next to the switches. My original Oct 72 built 73 fascia doesn't have any of those symbols and says HEAD LAMPS under the light switch. The PG Classics panel just says LIGHTS.