240sx's are dormant sports cars...they have the right chassis, and weight placement, but a truck motor. With Headers, intake, exhaust, pulley set, flywheel, and clutch...i used beat a lot of hondas--including civic SI's, S10 xtremes, any saturn, probe's, eclipses...just depends on how much ur willing to spend in aftermarket shit, and how much you love ur car.

PS:i had my engine rebuilt...it gives it new life!