Beez: The PS2 beat the GY F1 A in overall road rating 7.04 to 6.94, but the outcome was reversed in both overall dry and wet track ratings, with the greater difference being on the overall wet track ratings.

I'm thinking GY F1 A as a replacement for the PS2, even though they're not N-spec tires. At least TR has the right sizes for both ends in stock.