We have been looking, without success, for someone in the region who would be able to record it for us. 😕
It is extremely rare for Asian-market English dubs to make it to video anywhere (Cardcaptor Sakura is a counterexample). This would be important to capture for preservation.
Some more counterexamples include the Filipino-made English dubbed versions of Voltes V and Daimos which were released on VCD but only in the Philippines.
The box sets were apparently holy grails for anime fans, which is why I first heard of these box sets.