For several years now, the Sanface software group has made PDFs easy to create from HP 3000 report spoolfiles. txt2pdf now has a 9.4 version available. The software runs on a wide array of operating systems, including MPE/iX. The source code is built upon Perl 5.
And oh yes, Perl 5.5 is supported for the HP 3000. Mark Bixby, open source guru for the 3000 community, has a tutorial on why the original spoolfile linespacing is not preserved in the conversion to PDF.
The Great Falls school district in Montana has implemented txt2pdf into its workflow, cutting down on paper costs and improving the distribution of HP 3000 data. A few years back, Scott McGregor of the school district's IT staff reported on how this solution slipped into his organization's workflow. He's also got an installation primer up on the Sanface site.
Even while the HP 3000 might be on its way out at Great Falls, using PDFs gives the system a longer lifespan. That's the kind of strategy that could give a thoughtful, well-planned migration extra room to get the details right.