hi
i am thinking of putting a rs2000 engine into my xr3. can anyone that has done this lend a hand by saying what is needed. does the engine just go straight in, wire the ecu up and drive away? do the rs2000 mounts fit?

or if i am just being stupid and should be thinking about another engine please let me know. i am new to fords i have been a Nova boy for a while

any help will be appritiated
thanks