The only height restriction at SFMM (too tall) can be found on Deja Vu. The reasoning I was given was that a rider with a long armspan may be able to reach up into the track above. 6'4' was the height they had listed when I was there, though they said earlier that it was 6'6". They werent really too concerned with measuring people who were "close" to 6'4, so the 6'6" is probably acurate even if the signs say 6'4". Interesting. If you look at the vehicle configuration and size, it is quite different from the normal SLC or the B&M inverted train. Also Goliath Junior has a height limit of 42" or something absurd. Only Kindergarten kids can ride it.
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My other car is a Giovanola!