I'd disagree with the DG100 rating. I'm also 6'4' and
in the fat B@#$%^d category, with long legs, big feet,
and shortish torso.
I tried one once, and had probs with canopy, and also
footspace(nose too narrow)
It did have a sheepskin seat cover though, which may
have made a bit of difference.
I gather the DG101 was a bit wider

If a G102 is a tight fit, then to be honest, EVERYTHING
is going to be 'snug'!
I did my 5 hours in a K6cr(but couldn't walk properly
for 3 days afterwards...)
The DG500(2 seater) is also very tight in the front
seat if you haven't got feet like a Geisha girl...