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If I understand the way they upped the displacement properly the jugs are the same and have the same bore size.
They basically "stroked" the 88 inch motor with a newcrank, rods, and pistons.
There are lots of other little changes inside, but that was the one that upped the size.
they will fit there exactly the same. Now if you want a bigger displacement i highly suggest yu by this book it will help you save thosands and give you real performance that will smoke the 103 SE street legal http://www.amazon.com/Harley-Davidso...668&sr=8-1
you can use the jugs, but they are the same, so you wont be gaining anything. you can't use the pistons though, because the wristpins are mounted higher up in the piston to keep the piston from ramming the head because of the longer stroke.