white triangles.
The other adds white blocks and the chevrons.
But I read it is possible to mask tape the big one in front and scratch off the superflous color.
Irreversible then.
Our Bill Bennett could supply the logos perhaps, as he made F1 conversions and should have the correct fonts.
Some dealers on ebay also sell the M1 with decals applied, and so does Modelissimo.
But with a steep premium.
Also be aware that the car isn't a Hockenheim winner anymore but the Zandvoort car.
TB-Decals-Models/1-18-DECAL-BMW-PROCAR-M1-1979-NIKI-LAUDA
Decals on ebay.de