That is how I did it today,4" grinder, body mount bracket is in the way and slowed me down to prevent grinding wrong spots. Had to drill the rivets after griding the heads off, they would not budge with the BFH and a punch. Air chisels tomorrow, much easier in my opinion.
Total time spent including going back to A.Z. because they gave me the wrong (now that would never happen...now would it?) 5 times going back!!!!! I did the wheel bearings as well, I would say around 4 hrs. Now tomorrow all air tools, lets see how long it takes then. BTW, I did not use the Air tools today because it was raining and I would have to pull out my motorcycle to give clearance for the Air Comp. I don't let my bike get wet,dusty or dirty, you have to be a rider to understand.