Hello, have had the Bilstein 6112 up front for about 4 years now. I started them off on the 8th perch and then moved to the 9th, after that started hearing noises. Checked everything else under there and everything seems good. I guess these things are worn out. I run a TJM front bumper with a winch as well. Planning on adding skid plates so I believe 650 springs would work. Anyone have suggestions on a brand? I was looking at Radflo from Optoffroad, only older threads on them. I think Kings are out of the question as they are 1 year out from what I hear. Thanks.