from what ive heard isuzu couldnt make more because the molds were hand carved and then the dies then made of ceramic - ceramic is only good for a limited number of impressions before it wears out - so unless the artist who carved the original body could reproduce the exact carvings again (unlikely) they could never ever be the exactly the same as the vx we all know and love - on top of that there was so much spent on r&d they couldnt possibly have make the dies out of steel and still sell the vx new for anything close to affordable - also heard another rumor about the reason isuzu made the vx was to get people into the showroom so they would be impressed by isuzu's technology but then end up buying one of the more inexpensive models like a trooper or rodeo - like a promotional item of sorts
--but of course i have no way for sure of knowing if any of these are true