I took the radiator out of my '95 Eclipse GSX in 5 minutes... I don't see how labor could be too much. If you bring it up here, I'll change it for ya right on the spot and only charge you a 6-pack

. Also, I doubt that plastic has any cooling capacities at all, although the endtanks of almost all factory radiators are plastic. I'd say invest in a Fluidyne if you want to upgrade. Do it right the first time and never do it again.