Hello I own a 1990 Ferrari 348 TB. Recently, I had engine problems and the crankshaft needs replacement. However, given the price of a new crankshaft, I was thinking if grinding the old crankshaft was a viable option. I've done that before, with good results, but never on a Ferrari. I heard say that Ferrari crankshafts have a low-friction surface layer, that would be ruined if the crankshaft is grinded. Is this true? Can anyone give some advice? Thank you.