I have never seen the ac vents in the roof, so I can't comment on the height of the roof in the model you looked at buddy, but as per your PM, the interior of the genII is updated compared to the genI.

Here is a view from the back of my LWB genI, without the roof vents, just for reference. I've always found that headroom was one of its strong points...
(pic is too big for direct linky so click here)

I can show you the interior of a genII for comparo, if you like. I think you got my list of what changed between the genI and genII? <img src="/forums/images/graemlins/smile.gif" alt="" />

1991 HZJ77, 1999 KZJ90, 1999 UZJ100, 1992 M101CDN2
https://www.thegearheadproject.com/category/jdm-journeys/