Not doubting the veracity of the (NCR) B757 lease itself by Primera but just pointing out the line of post re a National B757 arrival tomorrow AM at STN contains two separate points of info..
N887X FAZX is a privately owned DA7X Biz Jet which records indicate visits STN.
The B757 N176CA appears to be at Burlington at present having flown a service for NCR from Las Vegas yesterday.
The B757 N567CA appears to have been in store since 6.1.18 whereabouts unreported.
Whilst suitable candidates it will be interesting if either arrive then tomorrow at least.