Hmm.... I am not exactly sure if I understand what you mean. You want to make:
a) an anime trailer?
b) a trailer using scenes from an existing trailer?
c) a trailer for anime A with the sound from the trailer of anime B?
I know that ErMaC has done the dual opening with the music and credit style of Eva. Not exactly the same but close enough
You should never underestimate the predictability of stupidity.