On TF trucks the 3100 (short bed) and 3200 (long bed) use different size brake lines, front hoses and front wheel cylinders. I believe the rear wheel cylinders and the hard line on the rear axle are the same for both though. I've been able to find both at Napa.
The 3200 is a med. bed of sorts not the longest bed (they made 3 sizes in 56). They tell me the lines, wheel cylinders and shoes are all the same between the 3200 and 3100.
Either way the 3200 lists the wrong parts.
The 3200 uses different brake components that the 3100 for the hydraulics. The only directly interchangeable parts are the master cylinder, drums, shoes, and wheel bearings/seals. The rest is the same as 3600, including the lines (1/4" vs 3/16" ). The front hoses from a 3100 can be used on a 3200/3600, only difference is the length, fitting sizes are the same.
