A-Arm attaching points

[aex125]

I'm a little further along on 1078 now and have run into the next problem. There are pieces (brackets?) welded to the main tubes that the A-arms attach to and on one of my front ones the pin is frozen solid in it. I ended up cutting through the pin to get the a-arm off, but I still could not get the pin out even after much heating and beating.I have a spare bracket from the same side that is marked "rear" and am wondering if it is different than the front ones. When I compare the spare one to the one still on the tube, it looks exactly the same, but maybe there is a subtle difference between the front and rears? Does anyone know if the  front and rear ones are are interchangeable on the same side?
   Thanks,
   Jay