The B-series engines are about 50-70 lbs. heavier than the D-series setups, and the H22 drivetrain is about 50-70 lbs. heavier than a B-series setup. So you're looking at around 100 lbs. heavier in the nose easy.
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-Harry
AIM: NDcissive
CRX and Pre '92 Civic, Engine Tech and Tuning, & Track and Autocross Forum Mod