easy-peasy.the 120y was available with l series motors in japan,& probably new zealand.the conversion would be easier if the car as an auto,as they have a larger tunnel,but it'll fit into the manual tunnel with a little friendly tapping from a ball pein hammer.then you can line bore the block to take a z22-24 crank,overbore it to about 89-90 mm i think,& have a 2.3-2.4 litre motor,with a 1.8 litre engine number.good for being stopped by the fun police,'it's only 1800cc,orificer'.