I've done it on the 550s or whatever the square ones are, it was easy. I've had the 3000s apart a number of times but I don't recall if there is any reason you couldn't rotate the reflector in the housing. Let us know how it goes.
Are you hanging these from the brush guard? If so, please post a pic, I was debating replacing my square ones with a set of these I have but wasn't sure if I should or not. I always loved the Camel Trophy look with the square ones hanging there.
"I have taken more good from alcohol than alcohol has taken from me." - Winston Churchill