your either on some good drugs or their spoon feeding you the $h!t. their is no way that you could beat a decently built turbo'd LS motor in a civic. at 12:1 and a short geared ****** you may make it into the high 12s, probably not. their is no way that with just 12:1 compression, high reving cams, and a short geared ****** that you're gonna make over 300 hp. you're gonna need a fully redone cylinder head with all titanium parts, different intake manifold, oil pump to handle RPMs that high, carbon fiber body, light weight wheels, LSD, no interior, etc... man their is just too much stuff to get your setup to go fast much less get the rollers on the dyno to turn a 300 plus number. with your current setup i say you may make it to the 250 mark but i highly doubt it.
we aren't saying that the B18 isn't a good motor just your method of "go fast" isn't going to make the car go fast.