Need help on a front end.
dad has a rat bike all different parts year ect was bought this way.. its a 74 shovel hard tail frame

As it appears the front end is longer than stock.
It appears by measuring lengths my 86 fxrs front end would directly swap over. I'm seeing a few on ebay right now that label as a shovelhead but whe. Research the triple part number says 1000 cc iron. We these front ends fit what other information is needed or pictures to help identify and buy a new used front end for this beast stock length to avoid the +6 flop it had in low speed turns.

Thank you
in advance.