There is a fellow in Wanchese NC who has a CNC machine that he used to cut perfect groves in the linoleum in the rear of my 1954 Suburban (probably the same dimensions for 1947-1954 - and maybe 1955-1st series too).

I got the linoleum from Battleship Linoleum and I made my own pattern for the rear floor.

The CNC guy gave me his cutting/grooving pattern after using it to cut the grooves.

I think I posted photos in my posts regarding this undertaking.