Anybody ever see these before? How and Do they work? Do you need special lifters for this to work? Is this a worthwhile improvement over standard LT1/LT4 set-ups? Are there potential gains from this or is this just going to add longevity to the parts?
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2444958550
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2444958550
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