Dave - Just knee wraps makes 660 mighty impressive, did you compete in powerlifting in the past, or are you just naturally strong as hell?
Deadlift video looked easy as can be, nice work!
I've been vegan for a bit over a decade, always a naturally big guy but didn't start training until about 23, then started getting hurt a lot in my early 30s after messing up my back in my first stronman comp (strained both QLs on each side of spine, unknown possible disc damage as well according to osteo I visited). Last 6 years have been simply about trying not to get hurt while getting the old strength levels back and beyond, lots of good month/bad month back-and-forth with recurring back problems that really kept me from going anywhere for a long time. Just starting to re-learn new squat and deadlift technique that seems to be helping, so I've got a half decade of losses to make up for! I'm hoping to eventually squat and deadlift 600 lbs. each while keeping bodyweight at 260 or below (I'm back at 240, still got lots of room to grow), old PRs were 545 DL (I didn't deadlift for over a year before my injuries started, put all focus on squatting for a stretch, no idea where I could have gone with it if I'd kept up on it) and 525 raw squat/500x3, my bench always sucked and I quit when I hit 315 years ago. Since the lower body stuff is coming along slowly, I'm putting more work back into benching, hoping to hit 350+ raw at some point! Sorry for the long background report on that one