If you are wanting to spin it to 7000 RPM, I would definitely stay away from the stock crank.

 

is lunati a good crank because i have a connection to get them at cost.

 

Yes, the Lunati is a fine crank. Even at cost can you beat the price on a scat crank? Unless you have moral obligations to buy american forged steel I don't see a reason to buy anything else. Reher-Morrison uses scat 4340 cranks in all their super series engines and I don't think they would risk their reputation on a questionable product. Spend the difference in price on the top end of you engine. My 2 cents.