I need to replace the passenger half axle on our 95 impreza - the inner u-joint is getting really bad. From what I've heard, the best way to do this is just replace the whole axle. (correct me if I am wrong, though). There are a lot of sources for half axles, including on ebay. I don't want to do this job more than once so what's a good source reliable source of rebuilds? I take it most places require a core? Thanks! Remco