sub-frame bushings

ok, so there's hardly anything on this forum about sub-frame bushings. my main question is: does anyone know if the rear bushings (for a gen. 2-1995) will physically fit in the front? I ask this because on another site they seem to think it's pretty standard to use the rears in the front (i am told they are harder and will last longer) however, when i posed the question outright, no one responded. also, does anyone know of a good (and cheap) place to get these? my local parts stores can't get them (even NAPA), and i hate paying the local ford stealer!

Front and rears are slightly different. Try rockauto.com for parts.