Rowdy and Mean 318 build

Hypers can be sure a ton lighter than forged units (but not always). Takes stress off the rods and crank.

- I've run both in the same engine on 14-15 psi turbo'd; both worked out fine and I put many hundreds of race miles on each.
- Caution and tuning to avoid detonation made them both work to around 1.75 HP per ci. (Knock detectors are a BIG help!)
- And I have destroyed forged pistons in even a low compression engine when the ignition advance got all whacked out.