Interior Width Question

[beetle1303]

Does anyboby not what's the interior width of a 1303 ?
Between the mid posts of the car, between the door windows and the height of the seat area?
I now this question sounds stupid but I won't be near my car for a long time and I was thinking of buying a pair of recaros (pole position or furius).
they have the same dimensions
570mm at the shoulder area 430mm at the base and they are 840mm tall


Thanx