I am going to receive my TKO 500 next week! To bad the 600 has such a ****ty first, it has a great overdrive. I heard they are hard to powershift, a bit notchy. Do I use my stock shifter handle? How much HP is this transmission going to eat up? You can't argue with that torque rating. Spec or Mcleod clutch, which for the typical 300 RWHP street/strip combo? Any body that has a Tremec 3550/ TKO - 500 speak up! Thanks.