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  1. Performance Modifications for the NG900 / Old 9-3
    Hey all! This is my first post on TSL; glad to be a part of the community. So, there has been talk here and there about swapping the internals of the Cobalt F40 gearbox into our F25s. I know Nick said on his site that it's a direct swap. Has anyone on here actually done this modification? If...
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