back in the day i raced a s14 dohc in my 89 coupe, then all i had was an short ram intake and muffler(about 6+hp) , she was stock, i beet her by i'd say her front bumper was about 3 feet vehind my rear bumper, we were both automatics so their was little room for driver error but also the 95 and up 240sx weighs 150-200lbs more as well, a good match would be 89 vs 91. they weigh about the same. but as far as me racing a 5speed dohc , i'll definatly lose. a frien of mine ran a 14.9 with an exhaust and intake. he'd knock my sohc's off