I think you're going to struggle to be honest with you. I used to train with a bloke who was very meticulous with diet, mainly a fish and vegetables/wholegrains type of guy 99 percent of the time, but he looked fantastic for it, always shredded but still full, dry, dense muscle.
I hadn't trained with him for about a month when I saw him out the blue and knew instantly something was wrong. He'd just lost that fullness that you get at low bodyfat with a well-rounded diet. Turned out he'd gone vegan and was mainly eating fruit, some nuts, seeds and pulses and little else.
When I got round to training with him he'd lost strength and had flattened out even more. I stopped training with him because we would go out for food afterwards and he would try and put me off meat with various ethical or health based arguments- which I don't disagree with the ethical side, but feel there's not a viable alternative to animal protein yet that should see me giving it up completely.