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Its a 2001 engine with 60k miles and rebuilt heads. They will be installing my intake, fuel system and engine management systems to get it working with the 2003 car.
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Your old 2001 engine is a 5 chain, the 2003 engine is a 3 chain. These two have different variable valve timing arrangements with the 2003 engine having vane cell adjusters with load sensitive camshaft positioning adjustments. The 2001 engine has 25 degrees of variable valve timing while the 2003 engine has 40 degrees.
This is going to require some conversion and will have some complications. It is not a 1 for 1 swap thats simply plug and play.
The 2003 engine has a single row IMS, absolutely take the opportunity to retrofit the bearing or install the IMS Solution. Not doing it now, while it is apart simply isn't the smartest decision.
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