There seems to be Catalogue of interesting decal types, although I paid a lot less than that. Those will soon add up
you’re right - I think my full list, front to back, would be
2 * Pirelli logo for the front lower bumper
racing strip down the full length of the car
2 * AP Audemars Piguet logo for side of the front bumper
2 * Maserati oval emblem for the front wings
2* 27 door panel
2 * small Pirelli logo for the mirrors
2 * large Maserati sun visor for front and back screen (with trident on either side)
2 * Trident logo for rear haunches
small 27 for back left of rear bumper
small Trident logo for back right of rear bumper
I think it could look awesome, but suspect the price would be too high just for a bit of fun...