If you go to archive.org, try the broken link there. For example, when I do that with the sample link you posted, and go to this crawl, it offers to download a zip file for custom_title_1-0-2a.zip
https://web.archive.org/web/20070504194 ... ib_id=1435
A tip to keep in mind is that archive.org may have crawled your (now broken) link multiple times in the past years. If you click one crawl and do not get a download, continue clicking other crawl dates and you may find one. You'd be surprised how sometimes they crawled it a dozen times or 50 times, and one of those links actually included the download itself. So don't just click one crawl date and give up if it does not contain the download, try the other dates, too.