Hmmmm Ok. So its a stage 3/4(ish) cam pretty much?
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Similar yes. Just less lift and a little less duration than the IS4. That is if I remembered the duration correctly.
Ideally you'd want ported heads to get the full benefit. The heads I got from Nick were about equivalent to IS3 heads. Regardless. You'll need the valve guides machined to accommodate the extra lift. And 130# springs at the least
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