Scorpion Race or Endurance Rocker arms

One is built for cars that turn 7,000 once in a while but do it rapidly and the other is made for engines that have to turn 7,000 for 500 miles.

The race version is lightweight and basically designed for 1/4 or 1/8 mile competition. The endurance version is exactly as the name implies. Built for the long haul but is heavier than the race version.

You're going to give up a little power with the endurance version but gain longevity.

Both would probably be fine in a street car. It really comes down to what you want. A 1.6 or 1.72 ratio.