It's quite possible, Minister. Those engines were unsung heroes in Irish narrow gauge lore, having b een designed for fast suburban trains on Ireland's only narrow gauge double-track suburban line. That the CBPR could operate an intensive service reliably with just four of these engines all its narrow-gauge life is testament enough. Apart from the NCC 2.4.2Ts, the only n-g locos with which they were comparable, they would have been the fastest narrow gauge locos in ireland.
While the other locos and rolling stock on the C & L were very decrepit indeed by CIE days, strangely the track on that system was in tip-top condition. The only thin g I would have worried about if racing one of those engines on the C L would have been whether the carriage behind me would fall to bits!