Okay, having watched the entire trilogy, I've decoded the true names of the movies that Golden Star is trying to pass off as "Born to Fight 2" and "Born to Fight 3". Sadly, neither is a Born to Fight movie (they do actually exist! But these are not them), as Tony Jaa is in both (briefly) and he is in none of the BTFs.
Born to Fight 2: Fighter's Blood is in reality "Nuk Leng Klong Yao" a movie from 1994. I was able to match the Tony Jaa appearance to screencaps found on the Tony Jaa dot org fansite.
"Born to Fight 3" (on this "trilogy" USA set), when the title comes up it's subtitled "Poo Taa Kaa Thaa Thalom Khom", which matches "Puta Khatha Thalom Khon" a 1997 movie with another Jaa cameo appearance.
So that's that. Only the first Born to Fight is the real one in this box set. But that said, buying this "trilogy" for $10 is a great way to get your hands on two very random Panna Rittikrai films we might never have seen otherwise. These are super low budget, but the stunt work and choreography occasionally shines. BORN TO FIGHT 1 is very good, with spectacular fights and stunts. The other fake BTF 2 and 3 herein are only okay, but hey, rare and unexpected and in that sense still a find for Panna fans!
Now if we can only convince anyone in the US that young Panna is just as freaking awesome as a young Jaa, maybe they can start releasing his earlier films, which tend to be much more kick-ass (he starred and did a lot of the stunts himself) than his later ones (where he's a little older and so has other guys do it). I've heard that the true Born to Fight 3 is quite good, though it's currently only available as a Thai VCD with no English subs.