Whipple or Kenne Bell for twin screws are equally good.
There are also Vortech for centrifugal.
The Vortech is a cheaper alternative to the twin screw and more of a moderate skill to install.
Tuning is a big must regardless of what you go with.
Pushing the engine to the limit is borrowing time. Many S197's runnin around with blowers and turbos and I have yet to see one that hasn't had to replace the lower end after time when pushing beyond 12lb boost.
Edelbrock has come out with a twin screw setup too now.
Dont know much about it though.

Rich Sr.

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