Contact Richard Lacy at earlyv8@aol.com, (626) 338-2282 for a master cylinder kit that uses your original pedals. I believe any backing plate from 1939 through 1948 will bolt on and work with your existing hubs/drums (double check with Richard while you have him on the phone). If you want better brakes ask Richard about Lincoln brakes. Buy tubing from your local auto parts and learn to double flare the ends (or have a brake shop do it). Buy various lengths of tubing to minimize the number of flares you will need to make. Copy the brake line routing from a '39 and up using 1/4 inch lines and the same fittings. Strongly consider adding brake drum retaining clips to the rear when it goes together. Don't use copper lines. Consider Silicone Dot 5 fluid (a hotly debated topic). Charlie Stephens
Why are you looking for a 1939-41 pedal assembly? Is it for another car? If you are think about using it in your '38 the one you need is 1939 only (Drake makes a repro). The difference is that the '40-'41 will put the clutch release lever in the wrong location. The clutch release arm comes out on the right side of the pedal assembly in the '39 unit. I would still consider using your original pedals and the kit that Richard Lacy makes. It would be interesting to hear comments from others. The '39 used to be the way to go before Richard came out with his kit. Charlie Stephens
The 37' truck I'm building did not come with the pedal assy. I'm going to be running a 1949 8BA and 1949 3 speed with 1937-38 wide five wheels and brakes.
Is this the same '38 that we have been talking about? Actually it doesn't make much difference between the two years. You might want to check out the costs but it still might be cheaper (and easier) to buy the '38 ('37?) pedals and the kit from Richard. The '39 pedal assemblies go at a premium while the '37-'38 are a lot less expensive (cheap?). I saw what might be a set on ford barn a couple of weeks ago but the guy didn't know what they fit (and I am not sure) Charlie Stephens