Hello.Ive just been added to this forum in search of some answers regarding installing copilot brakes on my 1987 Baron.I would appreciate some insight from anyone who has undergone this process.

Mike, if you look up in the rust colored banner above, you will see SEARCH third item from the right. "Co Pilot brakes" will give you references to quite a bit of material posted here.
I have done the job hands on twice. Beech used to offer a kit, with drawings, new pedals, brake cylinders, hoses and lines. Not current. You can assemble your own parts, find the Beech kit number, and reference it in your 337. Pedals on ebay run around $200. New Bendix cylinders about $700. Hoses made to measure by Gee Bee another $200. Labor is 16 man hours, by someone who had done this before.(40 by a newbie) You can use a plumbing design which uses the existing check valves by running a new hose from the out line of your pilots side cylinder, to the in fitting of the comparable brake cylinder of the co pilot side, and the co pilots out line returns to complete the out line cycle, using an adapter, to the out line of the pilots cylinder, which continues to the check valves, then to the brakes on the main gear. Easier to see on a plumbing diagram, which you must research and submit. Cylinder manufacturers websites can have these diagrams, or your maintenance manual might.

You can also look on http://www.csobeech.com/. Scroll down for the search window. Mike Caban did the job with salvaged parts on his Baron.

That picture of the uninstalled brake lines is assembled wrong. Look at it closely and you will see that the lines cross. It's been a while since I've look at it..

Jason