Yup
You'd need engine, gearbox, full loom, dashboard dials, driveshafts, suspension, rear beam, brakes all round, manifold, exhaust etc.. etc..
The insurance would be stupid as it's a conversion compared to just owning a sport.
Unless you're trying to do a conversion and not tell anyone to save on insurance/tax (both of which are illegal) there really is no point
You can pick up a 182 for £1200 these days and just chuck whatever bits you want to keep on to it