With the motor I am building I should be able to be just shy if not right at 400 with race gas on my EVO3. But I am building it for 400 on pump gas(hence the reason I will be spraying). It is entirely possible to get 400 on race as I was at 320 with a very weak motor and about 24 psi. If you want to be for sure I would recommend either an FP green which will do it all day long and give you great pump gas numbers.
I am kind of in the same boat as you are for final goal with our setups. I was looking at this one,
http://www.agpturbo.com/customer/pro...&cat=72&page=1 but have since decided to keep my EVO3 until it dies, I may go with that one or the slightly bigger 49 when I do need to upgrade.
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