Yes I'm growing it now is there anything I can help you with?
Personally gorilla zkittlez doesn't have the terp profile nor the ability to compare to painkillers.
If that's something your after I would seriously recommend something like OG Kush, Bubba Kush, Sour D, Chem etc.
Your looking for a fuel/gas terpene with a wide leaf drug cultivar (indica) because they most accurately connect with your brain like opioids.
Reference:
Many of Kevin Jodreys talks are on this subject he and a professor from a California University did a study on the effect of terpenes and cannabis with a brain wave analysis.
Plus Kev also asked people in his own dispensary thousands of them why they smoked the OG and most replied with because they were opioid addicts and it helps give then their life back.
That being said I'm sure there are other cultivars that will do the same but it will be subjective in how and if they effect different people.
Goodluck and I hope you get what you're looking for I just thought I'd shout out and I'm happy to help in any way.
PS I'm also an ex heroin and opiate/opioid addict, you can do it and when you do you'll look back saying holy fuck why was I so worried about the pharma escape. My