My point is any "rattle-can" spray will come out better than brushing. Your best choice would be to use some spray primer and top coat withe your choice of color. I take that back. Your best choice is to have fun building it!
I have built this kit several times and consider it a milestone model. I agree with everything that has been written so far. My friendly advice would be to at least buy a Testors spray can of flat black for the chassis and a can of spray gloss white and use it for the white parts of the body and top. You'll get a much more satisfying finish that way. I'll be watching with interest. Welcome to the hobby!
You probably know this because you seem well versed in Duesenbergs but as a thought, Duesenberg instrument panels were mounted to the firewall with aluminum brackets and tubes.The wiring ran inside these tubes. You could do something similar by fixing the firewall in place and use the back as a foundation for a mounting bracket. Attach the instrument panel and fill the gap with a piece of plastic, ahem, upholstery, and walla, problem solved. I personally really like the red chassis.
I may be wrong but I'm betting that the 32 hubcaps will fit over the 33 wheels. Then there is the better under hood detail of the 32. While your at it...posable front wheels...possibilities are endless. Might I suggest two-tone blue dark with sort of a dark tan or maroon upholstery?