Ko te N-300 i ahu mai i te F-5E, me ngā āhuatanga o te fuselage roa, toronga pakiaka iti-mata ārahi (LERX), me turbojets kaha ake GE15-J1A1, whakatauranga i runga i 9,000 lbf (40 kN) ia. I te parirau i te paku whakaarahia ki te whakapiki ake i arotau pūkaha ngāwari. i te N-300 atu whanake ki te P-530 Cobra, e whakamahi 13,000 lbf (58 kN) GE15-J1A5 engines, ki te iti rawa.25 bypass ōwehenga ki te ingoa "turbojet leaky". i te bypass anake he awa matao mo te muri o te engine, tuku i te engine hanga o mama, he māmā ake. i te nuinga o nga waewae tapawha o P-530 (LERX), me te kaha ake GE15-J1A1 turbojets, whakataurite i runga i 9,000 lbf (40 kN) ia. i te parirau i te paku whakaarahia ki runga ki te 50 ° (400 m2) te nuinga o te wā, engari
kaupapa Northrop N-300