Weird, I thought Road & Track tested the MKIII @ 14.3, that's with an automatic. Anywayz, the MKIII & MKIV definitely have heritage but are 2 seperate entities. As far as resonsiveness to modification, they respond well. Especially to exhaust modification. Their transmissions (manual) and drivetrains are very robust, as well as their bottom-end, which has been know to support 600+ HP (fairly reliably). If you get one, don't even think about changing the cams because they can support up to 700 HP.
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