Hey folks. I have an existing IPB site which has been around for years. I'm wanting to import another site into my existing site. How do I install just the converters application? 

If your community is up2date, you'll have to download the package from the client area https://invisioncommunity.com/clientarea , extract it and only upload the applications/convert directory.Once the upload finished, you can install it via the  ACP => System => Applications page.

Awesome. That's what I was hoping you'd say.