Thanks to Kiba from Cinehound forum I'm now the owner of the original Thai version of CANNIBAL MERCENARY!
To the best of my knowledge, this version only exists on a rare VCD from Thailand and I have never seen this version referred to in any of the reviews I've read. It's gonna be interesting to make a comparison between the uncut American VHS version (or supposedly "uncut" version) and this original version. The only thing is, although it's from a Thai VCD I guess it may not guarantee it's the completely UNCUT original version since (which is well known) Thai VCD & DVD releases are often censored. Oh well, we'll just have to wait and see. The Thai VCD is fullscreen and not surprisingly recorded (or dubbed) in Thai language.