Getting under my "new to me CJ5" this afternoon to drain oil and other fluids and noticed this... The rear spring pivots have been replaced and C shackles have been attached directly to the frame. So my front springs have C shackles at front and rear of the front spring packs. I see no signs of the old pivots being removed from the frame on either side, so whoever did it took their time and ground off all remnants of welding, etc. I've never encountered this before in my jeep experience (3A or M38). Was this a factory option at any point and should I be concerned if it's not? Can I keep it this way? Should weld on some new spring pivots at some point?