Zakurdaew

Does anyone know if there is a trailing arm from another Subaru that will fit in place of the stock one on an 86 Brat? I know the part number is 721070130. I've tried everything and can't get the ring nut free and I doubt the bearings are going to come out if I do...

Hi, I recently replaced my catalytic converter on my 1981 EA81 after I noticed some rust holes. I ordered a Magnaflow direct fit with a Bosch oxygen sensor and installed it earlier today. After getting everything hooked up, the car had some trouble starting and won't idle, it smelled a bit like it was running rich (my buddy couldn't tell if it was though). I'm guessing the issue is in the oxygen sensor, but I'm not sure, I couldn't use what I figured was the stock sensor because it was rusted in place. The Bosch was the only one they had available at the parts store down the road. Hoping to get this car running in the next day or so, anything helps. Thanks!