Numerous reasons – foremost is that we don’t own any of the existing locomotives, nor are we likely to encounter one that is available for sale. The bulk of the PRR historic collection, now in the possession of the Railroad Museum of Pennsylvania, is owned by the State of Pennsylvania. The PA Historic Museum Commission regards these locomotives as artifacts, and presently will not allow the sort of “alterations to the historic fabric” necessary to restore them to operation. Unless this policy changes, that leaves the two Long Island G5’s (#35 and #39), The I1 in the possession of the WNYRHS (#4483), and the K4 owned by the Railroader’s Memorial Museum in Altoona (#1361) as the only potential restoration candidates. The 39, 1361, and 4483 are already being restored, or considered for restoration by their respective owners, so we wouldn’t want to duplicate their efforts, or compete directly with a similar design. That leaves the D16, E6, H10, L1, or M1 as candidates for duplication, or one of the extinct F3 or N1 classes for replication. The D, F or H would make a great candidate for a short line, but not so much for mainline service. Besides, there are plenty of 4-4-0’s, 2-6-0’s and 2-8-0’s already running, so if there were interest in replicating one of those for short line service, The Strasburg Railroad or another locomotive builder would already have done so. An L, M, or N would be great to see run – but they’re an awkward size that’s too heavy for most short lines, but not fast enough for mainline service, except possibly the M1. We’d probably have a harder time answering the “where will it run” question with one of those than a T1. We could replicate the E6, which certainly is small enough to operate on a short line, and fast enough for mainline service – but by the time we built the three (or four) of them needed to pull today’s excursion trains, it might be less costly to just build the T1.