I was reading on another fourm about some using a bearing from a 92' Ford Ranger 3.0L, Napa part number HB209-KF, that you can also get from rock auto cheaper. The guy said it worked with no mod to the bearing, just had to add a steal bar acroos the bottom of the bearing due to the fact that the ford bearing insulation gets bolted to the crossmember and has nothing to hold the insuation in place.

I have not tried it yet, but i do plan on it.

Driftmtion.com sells the center bearing for like around 200$