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Junior Member
I want to know what I would need to get my stock '93 Civic Si Vtech motor have between 275hp and 300hp. Please reply....
I say build the internals up and boost that biatch! You use stock internals, but wont get the amount of power you want.

definatly build up the internals and boost it
you would be better of going with a b series or even an h series if you want that much power that little engine will be highly unstable at best trying to get that much power out of it
the D series will be fine ... you just need to do it right and build up the bottom end to handle it ... if built right you can get over 400hp out of a D series