Essentially the answer to your question is yes, there are parts that will interchange, asking which parts will interchange is akin to asking how long is a piece of string, there is no one answer, and no one is going to take the time to prepare a list for you - nuts, bolts, bearings, seals, lamp bulbs, locks - these things are rarely unique to one vehicle.
If on the other hand you ask about a specific part, and you're lucky enough that someone who has tried it, and knows whether or not it will interchange, you might get an answer.
What is it you're asking here? Obviously the Swift with an M13a and an M15a are not the same, so you can't be asking about the entire vehicle, but that is literally what you have asked...