I drank every bit as much as you. More actually during my last bit of alcoholism. I was drinking atleast a 26oz bottle of whiskey, vodka, rum or whatever and often a 6 pack of beer with it. It was not an unusual day for me to drink a 40oz bottle of liquor with some beer's.
I was a drunk for 3 years and tried to quit cold turkey numerous times and i simply couldnt do it. I would have horrible hallucination's, delusion's, paranoia and id get the shakes so bad id feel like i was having a seizure. Looking back i may have had a few seizures. I got so bad that i would be paranoid and delusional even when i was drinking.
When i finally quit for good i used benzos and opiates. In my case i used temazepam and i think percocet. A longer acting benzo like valium would be better though. This pretty much killed the withdrawal's and took the craving's away. But i still had intense craving's month's after and i still get craving's now and again. Hell i was walking past the liquor store the other day and i was thinking how nice a bottle of jack daniel's or canadian club would be. I could almost taste the stuff.
It is the hardest thing to kick. Ive been through opiate withdrawal's twice and the physical withdrawal's and psychological craving is nothing compared to what you get coming off booze. Not to mention the fact that with opiates atleast you arent doing any damage to your brain or body. Alcohol totally screw's your head and body right up. One of the worst drug's you can get addicted to by far.
Keep trying to quit but at your point you cant go cold turkey without some kind of medical supervision even if it's just a valium script to keep you from going into seizures. No doctor in his right mind would just tell you to tough it out after drinking that much booze. You could actually die from withdrawal's.
Anyway if you ever want to you can PM me anytime you want. It might help to know that someone has been in your situation and has actually lived through it.