Hey, I'm the creator of BuildCores and just wanted to share a new feature we just made. You can visualize your intake and exhaust fans + AIO in BuildCores on over 3,000 3D parts. Let me know if you have any feedback after trying it (or also any feedback in general like missing 3D parts or pricing being buggy). We're still in beta but we're trying to get to fully 1.0 ready in the near future. We're basically trying to make a next generation 3D pc part picker.
Try it out on the BuildCores website.
Also our products DB is open source if anyone wants to contribute. We'll open it up to 3D contributions in the near future too.