hi guys. well im really needing some advice before i go and blow alot of cash on a engine. i have the chance of getting my hands on a engine from a "Y" plate impreza turbo which i would like to uprate. i want to base the mods around running a tdo5/o6 from andy, the gems ecu which is in the car at the mo and and a fmic which i still need to buy. i also am about to purchase some new injectors. i also have fitted a haward and scott full exhaust system.

question 1 is -- does the engine from the "Y" plate impreza fit into my car which is a my99 uk turbo. i was thinking about the mounting points etc.

question 2 is -- i am aiming for 400-450 bhp with plenty amounts of torque. i dont want to be running lots of boost but am open to suggestions.
any words of wisdom would be great.
thanks
iain