I'm about 6'2" and 225lbs … and much as I'd like to say that’s all muscle, its probably more doughnut related than working out. But even so I can slot right into a Roadster and the chassis hasn’t collapsed just yet !
If, as your name implies, you can fit in an original Pantera you will definitely be ok in a Roadster. I've repeatedly tried to drive Pantera's but despite all my best origami efforts folding up my legs, I cannot get into any kind of safe driving position. So, all those DeTomaso posters I had on my bedroom wall as a kid turned out to be in vain …