ABF = easy swap but you really need a donor car as a LOT of parts are diffrent. so sell car add the money you would have spent buying a decent donor to this and buy a good mk3 16v it's also a lot quicker and less hasstel.
the first rule of enigne conversions is never build what you can buy and it's proven true over and over
if your determined to use the car put a 20vt or somethign in you chouldn't buy it with as the enigne will dowm as a mofication on your policy you may as well make it worth it