It is possible, provided you have a trolley jack and ideally an airgun and sockets. I've never done one on this particular car myself, but the general procedure is to jack up under the sump, using a block of wood (important so as not to damage the sump). Take off anything that prevents you getting at the mounting, then unbolt the old one (some of the bolts may be very tight, hence airgun useful). Then bolt the new one on, fully tighten, replace any stuff removed and lower the jack.
However, if you're not sure, get a garage to do it, for safety sake :)
John, March 2008