I've had this for years, was planning to use it on my 66 while detailing the original spacer but no longer need it. Don't know what the original application is, possibly truck or perhaps a period Ford generic part based on the original larger 3/4" water pump snout hole which allows a sleeve to be used for 5/8" pump snout applications as well. I've installed the 5/8" sleeve so ready to go on a 289 water pump.
Total length 2.39", length between mounting surfaces: 2.11". This is only 1/32" longer that an OE HiPo spacer which would never be noticed when installed. If you don't have a correct HiPo spacer this would be a great alternative, excellent condition for it's age.
$30, USA shipping included.
Thanks,
Dave