Okay, great help from
http://www.docinjector.com/
Not much on their site or their eBay store, but I emailed them and they responded really quickly.
Apparently the injector size is a
huge 400 cc/min (39 lb/hr)! I guess it makes sense considering that it is one injector feeding three cylinders = 133.33 cc/min/cylinder (13 lb/hr/cyl).
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