In further discussion with my dealer contact yesterday, one of the main issues of concern with BMW NA are cars with automatic trannys handling 421 ft/lbs and UP. Seems they haven't had much trouble with clutches and manuals.
As an aside has anyone picked up any information on rear sub-frame issues with modded cars? Seems in Europe E9x models with diesels may be damaging rear sub-frames? All that torque I guess.
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