motor swap

ok how hard is it gonna be to drop a 94 525i motor into a 85 325....is it retarded to think about or would it be worth it...found the motor cheap car was totalled, and person goin to get rid of it for 800 bucks...and got the car for 600 but i know the motor is goin or damn near gone...any help would greatly help in my conquest...

do it, have fun with it, thats pretty cheap for the enjoyment youll get out of it. itll be alot more powerful. good luck