Hey, all. I came across an great offer to buy a set of 718 AP3 club heads 4 iron-6 iron. I am contemplating buying them and replacing the heads on my 716 AP2 4-6. However, I was wondering if there would be an issue with using the same shafts since there is likely a difference in club head weight between the two sets. Also, would I need different ferrules or are they the same? I am currently using True Temper S300 shafts if that makes a difference. Any help would be greatly appreciated. Thanks in advance!