Been using stock Nippendenso starters for ever! Our 13.5-1 W5, the W8 mill 13.5-1.... changing to the 904 required some grinding on the housing for fitment (R3 deal....). To the parts store young man!! ....or recycler. I’d pull a used one off a 90’s pickup all day long. Before you send the broken one back as a core, pull the copper contacts out of the solenoid. They’re probably still in excellent shape and can be handy to have around.