Taboo engine swap? Options

[Razgriz]

lately i've been looking at swapping out my 7afe for a 3s.. but i was never really sure if that was the best engine to transplant. so my friends and i were talking and the topic about replacing the stock engine with that of another car manufacturers came up.

now ive done this before with v8's and the like (favorite was squeezing a 302 chevy into a 240, hehe..)

but thats more of a wrench and hammer job.. my favorite kind. but to the question,

recently through some friends i have come upon a 20B 3 rotor TT mazda engine and was wondering is it possible to drop it in my 94 celi'?? these 'tuner' engines/cars have a little more electronic wiring going on than i am used to. but does anyone know what i would be getting myself into?? (besides converting to an
all-trac.)

sorry if i offended anyone by wanting to put a mazda engine in a perfectly fine toyota. (i'm just a fan of both)