Do you think the AIS might know something about building muscle?
Do you think the other sites, surviving as they do on income from supplement companies, might have an interest in getting you to consume more protein?
But seriously, you're not going to weigh all your food and measure the protein content of everything. So who cares. If you want to get bigger, just eat. Don't think of minimums, think of the maximum you can force down you. Make sure there's plenty of good fresh food in there - for example, if you want to eat burgers, make your own.
You will probably just poo most of it out. But some will stay and help you get bigger.
Eat like a horse, lift like an ox, sleep like a log.