B&M flex plate

Byron Gray said
I got this flex plate for my 73 Duster with a 360 and someone I was talking to said this flex plate is used with a zero balance converter. My question do I have to use a zero balance converter or can I still use my one with the weight on it?

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That's for a 360 (externally balanced). Meaning you need a neutral balance converter. If your converter has the 360 weights on it you'll have to knock them off or use a neutral balance flexplate.