On the 1500's the lower ball joint is staked into the arm also. So add a big flat cold chisel and hand sledge to the list to cut/unfold the stake if you do not have them already. Not a huge fan of Moog (very overrated IMO) but they do offer the ball joint that you press in and secure with a heavy snap ring if your not comfortable attempting to re-stake the replacements. I didn't feel up to the task of re-staking the replacement part without risking damage to the new part and/or not getting the staking done tight enough without a massive press to mushroom the lip over tightly and evenly if that makes sense. 25/3500 uses a snap ring design already according to the moog directions.