I wouldn't spend all energies in converting an initial D to daytona. Speaker position, colors, plastics integrity and so on are only details. Start thinking how to interface your cabinet and learn how to have it working. You don't want to end with a nice looking but unplayable project.
Ok I thought these Sega cabinets were all identical? Is that not the case?
So I figured painting the Daytona color scheme wouldn’t be that much additional work.
In terms of the controls I’m pretty much decided on
Start button, 4 views, coin in with real coin and coin reject.
G29 steering wheel/shifter/pedals, so that would give me paddles and buttons on the wheel for games that need it.
Shifter would be 4-way and hi/low compatible from what I read and have buttons.
Not sure where people are putting the exit button, I don’t see a need for pause on a racer.
Another consideration is using the dimensions of the Sega Cabinet posted in the driving cab thread, along with the Gozer Sketchup of Daytona 2 and have it built from the ground up to match Daytona.