Tamper-proof bit to remove the MAF sensor

[N227RV]

I have a 2004 Special Edition and want to check/clean the MAF sensor. On my old year 2000 Boxster I needed a T20 tamper proof Torx bit. On the 2004 SE, it appears that I need some sort of pentalob tamper proof bit. My usual strategy is to buy and try bits randomly until I get one that works, but I thought I would throw this question to the list to see if I can get the right part ...