[Bruce R.]

As to the brakes, you have air trapped somewhere, you already know that. Once you get the power bleeder tied into the MC the air will be blown out, and you'll see where it was.
There are times when air is trapped in the master cylinder itself, it's hard to get out using 'standard' practice. The power bleeder will help you out, but be sure you have plenty of fluid in the bleeder.

The coolent system also has air trapped in it. be sure you have the system on full heat, leave the cap off of the overflow tank and add 50/50 mix as you run the engine. It may take time, but the air will 'burp' out.

 

[Bruce R.]

This is an example of why it's a good idea to take some photos or at least notes on how things look before you start a job you have never done before.
Brake parts are very often interchangeable, there is no right or left part, and the bleeders can be installed where the brake lines are. They do it that way for a reason, it costs less to build and repair.....

I know I'm stating the obvious, but some times..................