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Just a heads up, UDP's aren't very popular here. The gains are negligible, the loss of the harmonic balancer, and the increased risk of burning out your alternator, or even overheating.... Just not the best idea ever for a mostly stock motor. Thanks for the reply Ryan, Im aware of the pros and cons...

Hello all new to the site yet to do an intro but can someone please point me in the direction... Looking for a underdrive pulley for a k8 and how to fit it..

Rainy...