Will you be keeping stock fuel or will you wanting to be upgrading injectors and what not later on? The 464 would be fantastic for right now but the 467 will be your best bet for some more playing room.
464 will be quick to light and the 467 will be a little slower but still powerful.
I would do the 464 since you are only staying around the 650hp range.
I'll shoot you a pm with some more info
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