i'm a new racer and was wondering what peoples opinion was on which is the better engine. it would be my first new engine.

the track i race on is fairy fast, and the technical stuff isn't tight. but short bursts of power and quick accelleration, not to mention top end speed on the long straights is what i'm after.

is there a noticable difference between the 5port engine and teh 7 port engine

whats teh advantage in their range of the Modified engine over the standard one. is it just more power.