These 2 Budd Fluted Side Baggage/30'Mail/Auxiliary Power cars were delivered to Rock Island in mid '39 for use on the "Texas Rocket."  It isn't known if the power unit was ever installed.  Both cars were retired in the late '60s.  #800 went to Strates Circus and #801 was scrapped.  The cars were 68' long, so the core kit/car you decide to use will have to be shortened.