You are correct manual brakes right under the driver side floor. I did try and pull the brake pedal to me when I stopped once to let the brakes cool on the way home. It didn't seem to help. I went to my local parts place they are a really good local parts guy not a chain we traced the casting numbers and didn't get anywhere. We finally matched it up by picture it was an exact match the second one was the same except it had two bleeder screws above the brake lines . That's why I am thinking its close to the one I pulled off but not exactly the same. Maybe the new one has the residual pressure valve in it??