proper hoses? wtf are you talkin about? the upper and lower hoses connect right up. best thing to do would be to find an older gasser rabbit, pull the radiator and heater pipe out (the pipe that goes from the water pump to the heater core.) then voila, you have deleted your expansion tank.
I bought my new aluminum radiator from http://www.radiator.com/volkswagen-rabbit-1984-price.html?carengine=1.6L,%2098ci,%20L-4It was delivered to my door with a life time warranty for an extra $5 or $10. Their price includes personal delivery. I see is a little cheaper than German autoparts. For me, the life time and next day delivery meant quite a bit.