I believe it is a Tamper proof T-25 (torx bit with a hole in it)

 

I cheated a little to get mine off. I used a small drill bit and drilled off some of the peg in the center. I then used a metric allen wrench to get it out. They are a pain without the right tools. LOL

 

get the slp kit from summit ,and leave it at that 575 rwhp.

 

SLP kit from summit?? ??

 

That kit seems a little overrated to me!! I have NEVER seen a stock Eaton blower produce any where close to 575 rwhp. I have seen a few Stage 4 ported blowers with upper and lower pulleys get close to the 550 rwhp mark. Outside of a Whipple or Kenne Bell, I would be hesitant to believe the 575 rwhp claim.

 

yeah ... looks kinda sketchy, their dyno results dont even prove the 575