Hi,I am the happy owner of a 1/2 restored M2A1 White 1/2 track. However, I'm not happy enough.About 5 years ago I was able to buy a 1/2 track, but I didn't do enough homework before buying. The buying process was, for me, stressful and very expensive, included international shipping, but I now have a very nice vehicle which starts, runs, and drives. Since then, I have realized that my 1/2 track is not a best fit for me. I want an M3/M3A1, mainly for the rear door access. Also, as a user, not just restorer, I want a Cummins powered vehicle.But I hesitate at gutting the beautiful and complete engine bay.Then, I was offered a restored bare M3 winch chassis. Hmmm. So, not being knowledgeable about 1/2 tracks, I have questions, doing more homework this time before I commit!!Q.1. Can I swap all the mechanicals (except the engine, but including the front winch) from an M2A1 winch chassis to and M3/M3A1 winch chassis? The only problem I can see is that the rear idler brace is quite different. What am I missing?Q.2. Can I swap all the bodywork including and forward of the drivers compartment? How much of this bodywork is the same as the scout cars?Q.3. Other than being a bit longer, is the rear floor the same between these models? If they differ, how? This is important as if they are very similar, I can use the M2A1 rear floor as a pattern to build an M3A1 floor.Q.4. As I am in Australia, I need to consider the sale of the "left overs" from this conversion, mainly a good chassis, excellent engine, most of the rear bodywork and a bare winch. Knowing that this is a niche market, I'd still like some feedback on the market to absorb the excess parts.I may have more specific questions later, but this is a start.Thanks in advance.Sam.