Can a Chrysler 3.3 transmission fit 3.8 engine in town and country van?

No, a Chrysler 3.3L transmission will not fit a Chrysler 3.8L engine in a Town & Country van (or any other vehicle, for that matter). The 3.3L and 3.8L engines have different bell housings, meaning the transmission bolt pattern won't match. Even if you could somehow force a connection, the internal components of the 3.3L transmission aren't designed to handle the higher torque output of the 3.8L engine and would likely fail quickly. You need a transmission specifically designed for the 3.8L engine.