I was told by my local engine builder that the stock sleeve on a predator can be bored to accept a 558 piston. Does anyone have any experience with this? If so, is it worth it to just go with a 558 piston on a stock engine??? It seems like everyone I've talked to has more than just a piston in their 558's, so they can't tell exactly what the piston did for them.

 

No one know's?