You may want to bounce this off of someone with more experience on the relevant models, but since you've used a 1920... I've been told a 1920 falls right between the TC35 and TC40 performance/power wise. The specs might say a TC35 edges out the 1920, but folks who've used them seem to say it's the other way around (the 1920 has a 4 cylinder engine, 33.3 HP @ 2500 RPM. TC35 = 3 cyl, 35 HP @ 2600 RPM. TC40 4 cyl, 40 HP @2600). They all also weigh within 100 pounds or so of each other. Wheelbase on the TC35/40 (73.5") is just a few inches longer than a 1920 (70")
John Mc