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- Mar 11, 2006
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When it comes to design, the B18c will be much better compared to the B20b coz of the sleeve design. But nowadays, with competent tuner, tuning it conservatively will outlast the same as any other engine, as long as it is tuned conservatively and rev as practical as possible. But i would do the B18C for durability and would do the B20B for the power and wait till it cracks due to high RPM revving.