I know you can't rebuild them in the conventional sense. But how does their strength and actual traction capability compare to a clutch-type suregrip?

There is a 489 case, 3.91, cone-type suregrip available locally for $300. If I gamble and it works, it could save me $700 or so over getting a rehabbed center section.

This will be for a 12 second street/strip car. Thanks!