I need to replace th clutch slave cyl (pedal sticking to floor when driving in traffic on warm day) on my '00 Forester with '07 wrx tranny. I'm fairly certain I still have the original slave cyl mounted on the newer tranny, but not sure yet if it needed to be modified to fit. I noticed a huge price difference (>$100) between different models. I already ordered the '00 Foz application peice since it was much cheaper then the '07 wrx part. Anyone know what differences there are?