Question on the SWB K10 frame

[1969k10stepside]

Ok,I was inspecting the frame and seeing what areas I need to weld up and smooth out when I noticed the spring hangers looked like the ones off my 79 K10 and not the 69 K10.The front hangers are still riveted on but the back which look correct comparing to the 69 are bolted on.It also appeares the rear hangers have been moved back some and bolted back on but I cant confirm this.I was thinking they mave have been moved back for newer rear springs but they arent moved that far back,just about an inch.Can someone please post some pics of spring hangers on the swb K10's so I can see where they are suppose to be so I can get this figured out so I know which lift kit to buy?It appears to already have a shackle flip installed,which I will remove, that was on there with a previous lift kit.Are these the correct hangers for the springs?