I take it you've got, or are about to buy an Abbot?
The wheels and tracks are identical, as is the steering box. The final drives are the same as the 434, which has a lower ratio than the 432.
The engine and gearbox are essentially the same as a 432 but the pack is completely different, being longer and lower than a 432 pack. The radiator and heat exchanger are special to the Abbot, as are a myriad of minor parts. Yes, you can put a 432 engine and box into an Abbot pack (I've just done exactly that) but it isn't a simple job!
Andy