I would go with a B16. for the money that you save on going with a b18 you could get alot of work on the internals and exhaust. Plus the 1.6 is a stronger engine. It revs higher and IS easier to come-by. They are a dime-a-dozen... the b2.0 block with a V-tec head is a very hot ticket. It makes a load more torque and major power.... well good luck and i hope that i was A LITTLE help..
http://geocities.com/b16a2pwr
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Picked up a CIVIC CX. Now its on to ENGINE SWAP!!!!