Need help in identifying my new Bluebird

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I just purchased a 1970 Bluebird single axle pusher, side bath with a Diesel.
According to the research I have since done this configuration was not available
in 1970. I have posted some pictures in an album titled 1970 Bluebird, please
take a lokk and if anyone can offer any info it would be greatly appreciated. I
was told the Diesel is a Military spec. but do not yet have specific details on
the exact size and model. Thank you.