I have the Lopresti Wow Cowl mod on my PA30. My mod includes the longer than stock spinners (think Hartzell makes them) and the tip is a separate cone piece that is 7" in diameter and about 7" long. Mine are polished aluminum. The tip cone is attached with screws, and mine has developed a 1/2" crack. It can be repaired but I would like to find a new piece, if available.
FOR SALE : We also have two standard polished aluminum spinners for the PA30. They are perfect condition but we do not have the mounting plate bulkhead.
Al Powers N88AP 206 283 9996