yes,using the crossmember from the coupe will allow you to bolt in the gx engine,this is the reverse of a conversion i've done a couple of times to put a14/15's in coupes & sedans.keep the crossmember though,because if you trade up to an a14 or a15,you can put it back in & she looks factory.you could also sell it off,but i doubt you'd ever find another one if you ever needed it.these crosmembers are worth about $400 dollars or so new from nissan,though i haven't checked in the last year.