I did originally want a 2.0 conversion anyway, although not until next summer. My main problem is lack of funds. I'm not sure whether it will be cost effective to find the leak, especially after having it stripped it turns out nothing can be done. Is it worth just keeping it topped up on 15w/40 until i have a bit of spare money to splash out on it? I can't rebuild it myself, I don't have the time, knowledge or facilities to do this, so it will have to be a garage jobby anyway.
Not sure on where gearbox is leaking from, my mate spotted it last night as he was having a general look at the car, just went out and bought some oil from it. Me looking would be useless, I know jack about cars.