You can get the bearing from toyota, it is the same as the 4AC ones. To get the old one out you just pack the cavity behind it with grease and use one of the g/box bolts through the hole in the middle of the bearing to push the grease in and bearing out (with a large hammer). Then just tap the new one in. I don't think the 4AC clutch will work with the 20V flywheel but the 20V clutch fits in the T50 bell housing anyway so just use that if you have it.