So a bit more progress, although it's slowed down a bit over the last couple of weeks unfortunately.
got a possible grille and am toying with the idea of adding a 'hump' behind the drivers seat - so I made a papier mache mockup ... what do you think?
....
and tried my old spitfire seat in the car - could be a bit wide at the top though as the edge seems to catch on the car slightly.