The crane should run to 6k with those components as will the comp. The comp will make more power above 4500 but less under 4000. It is a bigger cam ofcourse .....
What about comps 275DEH? It won't give you the top end of the XE but will give you more bottom end than the crane and not give away much up top?

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IF YOUR USING OTHER PEOPLES IDEAS YOU ARE ALWAYS GOING TO RUN 2nd.......