About 20 years ago, when I was just a guitar player, I owned a nice '66 mustang fastback and it worked great for my needs- I could get a half dozen instruments in the back. I've been looking at getting another one, but I'm a bass nerd these days. Does anyone know from experience if I can fit a double bass in one for transport. Unlike the coupe models, on a fastback the rear seat folds down to open up straight access to the trunk. If I use an old Kay as an example, will this fit without having the scroll stick out the window as I drive down the road? Thanks for the help. j.