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I'm taking my engine to be rebuilt. It is the closed system renix that has had overheating issues since I've gotten it with 50k. Because I'm tired of cars overheating, I'm now looking into every way possible to keep the engine cool. I now have an aluminum 3 row radiator and everything to convert to open system. Now that everything is apart, I'm getting anal about things and been looking into heat wraps because the intake and exhaust are weaved together. Also I got a pacesetter header and I will paint it with ceramic coating and maybe wrap it. From what I've read, you want to put the heat wrap on the part that is hot(like header)...but also I've read about wrap that you put on the part that you want to keep cool(intake). And then I see that people put wrap on the fuels rails on other cars to keep the fuel temp low even though there is minimal improvement. I've even seen people say to keep aluminum unwrapped to let heat escape. Also we have a heat shield between the fuel rail and intake manifold...I'm thinking about painting or sticking a wrap to. I'm curious about the different heat solutions, in terms of wrap or coatings, that other 4.0 owners have done or think should be done. Thanks, -Chris