Hard to do?

Yo, well i got the older integra taillights(white/red) on my 91 hatch rite now just hangin not fitted in or cut or anything, just hangin and strapped in by lil zip thingys, anyway, i planned on cuttin the frame and molding them in but i want toyota supra taillights, now duz anyone know if theyd sit the same way the inteagra ones do now? Easier? Harder?