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just take more control of the situation.
You have not posted any significant details as others are mentioning. we are in the dark here about what the combo should be doing. All I can do is take generic maths, which are at best 80-90% accurate and draw generic conclusions about the displacement and the RPM.
First thing that springs to my mind is this:
The whole point of using VE head is the extended RPM capability with no rocker to throw. I.e. 7,100rpm-9,500rpm ranges. Any regular 2.0L from any manufacturer can do 6k 7k but it takes a serious engine to flow well at 8k 9k. Look at all those evo graphs, how torque just falls right off. That is how the majority of 2.0L engines are, including sr20det from the factory with stock cams. You can change the cam in the sr20det and extend that curve to 7k maybe even 7,500 to 8,000, but where the DET head falls short as-is the VE head is still highly capable past that point. This is the reason to use the VE conversion; everything below that point (roughly 7k to 8k rpm) is going to be more or less identical to an SR20det head with the same cam because the det head flows just fine in that range.
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