Mikhayl's 100% right there. It's very rare to see someone pick up a modelling request, as most modders mod what is personally interesting to them. To spend countless hours slaving over a hot model, needs some form of personal investment. It's also fairly recent that S3D was able to import the models created with all the features the SH4 engine could handle, so there will also be a bit of a technology lag.
If you download 3DS Max, which is free for a month's trial, there are plenty of very useful tutorials included within. You can contruct a P-38 lightning from scratch using a 3 view plan and set materials, including transparent glass. That's a great grounding in what you need.
Baking occlusion maps and making a normal map for a low polygon model might take a bit longer to learn, but no one will mind the wait. As Mikhayl says if you ask specific questions, you'll get specific answers. General questions don't tend to get responses because they are much harder to answer.
Subsim helps those that help themselves
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