The b18a1 is if I remember right either 124hp or 134 something like that but I am not sure exactly,dude you just need to do some research because depending just goto a search engine and type in the engine code you'll get more than you wanna look at.............OK here it is see took a whole five minutes:
90-91 b18a1
b18b1=130bhp@6000 121lb-ft@5000 redline 6500
92-93 b18b1
b18a1=140hp@6300 121lb-ft@5000 redline 6500
94+ b18b1=142hp@6300 127lb-ft@5000 redline 6800
So this maynot be dead accurrate but it is resonably close site is
www.hondaswap.com