If you had a good center plastic, could you scan it and know someone that can
apply it on vinyl and then onto plexi (or better yet, thin lexsand)?

I have a BAB if you need a scan just send me a pm. I've tried making some plastics......just experimenting around. It's not difficult, however I had to do a couple trial runs. Getting the colors to match is difficult although you would think the scan would be spot on. Make sure you drill your post holes in the plastic before you put your decals on. They don't react very well with drill bits!