Will a Jaguar xj40 radio fit a Jaguar xj300?

The Jaguar XJ40 and XJ300 have different radio designs and wiring configurations, so a radio from an XJ40 may not fit directly into an XJ300 without modifications. Additionally, the dashboard and interior layout changed between these two models, which can affect fitment. If you're considering a swap, it's advisable to check compatibility in terms of dimensions and electrical connections.