no but some of us are b12 fenatics and want to run the best time. better than the b13 which everyone has. so far i switched my engine to a ga16de then put internals and then turbo now working on sr20det with a t70 turbo. the ga had 367whp dyno tested @ 18psi. we usually like to just give it a little pep so we change to the ga16de from a 91-99 which is a bolton affair with the 89. it has 115hp stock and is decent for a like 80hp car to begin with.