Quote:
Originally Posted by trebuchet03
II do fit if I slouch down/lean back uncomfortably - but I'm not going to do that unless I'm getting 400+mpg as a result of it  |
That may be your problem: what you call slouching down & leaning back is the normal semi-reclining posture that most sports car designers intended. I confess I've never sat in a Miata, but I've owned a bunch of other sports cars including an Austin-Healey Sprite, and at 6' I fit quite comfortably.
Indeed, I find the semi-reclining posture both normal and comfortable, and the bolt-upright seating of American cars & SUVs not comfortable at all. I suppose it's all in what you're used to...