You are doing all the right things by asking questions. We all do that, and I am going to ask for help pretty soon when I start building my Chevy, because I am a Ford guy, and it's been 30 years since I have built one.

First off all, how did the brake people determine what spindles you had? There are no MM11 spindles for a straight axle. You either have early ford, 49-54 chevy, or Total Perfomance. You need to know what you have, and you need, in most cases to make some mods to get the new discs to work on any of those. Shoot some pix and post them of the spindles, and we'll identify them.

Yes, the 1 inch is too thick. Weight, plus it won't tab well to the glass body. You need to leave a gap all the way around the new floor, so the glass won't draw in, and the floor will put a pattern on the outside of the body, even after it is painted.

No one makes a steel floor, and you wouldn't want one. Steel doesn't bond to glass well, so wood is the choice. Just buy regular 5/8 exterior grade plywood, and it will be fine.

Don't worry about what other people call your car. People can be real asses, especially those who know nothing. I would be proud to have your bucket.

And when you start getting discouraged, get away from it for a day, or week, or month. Building a car should be fun, not work. My Son is getting discouraged at his '29 build, but he doesn't realize how far he has come in only one year. Building, or rebuilding a car takes time, lots of time. But it is a hobby, and you should enjoy the work as it is done for relaxation. (At least I keep telling myself that )

Post more pix of every aspect of the car, and well tell you what we think is good and what needs changed.

Don

PS Total performance and Speedway have inexpensive pedal setups that mount to the frame