realtype wrote: ↑Mon Jun 21, 2021 10:29 am To add, I doubt that all 6 HHP-8s have been in service at once for many years, but Amtrak does lend MARC electrics from time to time.I'd be leaning more dual-mode myself. CSX isn't likely to electrify and to be really cheap long-term, they'd have to run them with dual-mode diesel-electric.
As far as I remember nearly all mid-day Penn Line service would be run with Brunswick/Camden Line sets. It was rare to see an electric on the Penn Line outside of rush hour or late evening. If they continue with the same service pattern I think they would have to get dual-mode locomotives to put on some Brunswick/Camden sets plus pure electrics for the exclusive Penn Line sets, or just all dual-mode.