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Its all about smart investments in the engine. If you have money to spend on the engine the very first thing you should do is upgrade the IMS bearing, then replace the lifters..
Failed/ failing lifters will cost you performance that no bolt on upgrade will correct... A factory IMS bearing is closer to failing with every start of the engine.
Remember the Hare and the Tortoise??? They proved that you have to make it to the finish line before you can win the race. Added power does you ZERO good if you are boilting it onto an engine with issues or impending failures.
Upgrade the integrity first, then worry about making more power. Thats the wise investment.
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