Basically want a quick car with a fair bit of torque. Not to bothered about top end speed.
Best thing is to go on ebay with some really great pictures and advertise your Golf2 for sale.
I would recommend you take the rather ridiculous amount of money you can sell it and convert that into a large pile of cash.
Then convert the large pile of cash into a fast car.
Job done and you won't even have got your hands dirty.
HTHs