You can do line bore, that is an option, but for the strengh you normaly will cut the crank! My 440 crank cost me $100 bucks for the 10 / 10 and another $100 to turn down the counters, rods resized and new bolts $125 bought new OLD set of venolias 60 over, off ebay for $60 bucks they where brand new just never used!! the 440 steel crank was laying around so made use of it, so my rotator I'm in cheap!! have set of O T B Eddy R P M s , Racer Brown stx 21 Running 10.40s