Helpful feedback guys. I did find the right OE 4-leaf rear springs on NPD (Eaton), Classic (TBD) and Summit Racing - Summit's are $40 cheaper per leaf spring for some reason but htey have a decent rating?. NPD has the HD springs so I may go with these for s stiffer rear suspension and more longevity. Any good or bad experiences with the various brands? Car is truly CA car with little rust so I may get lucky removing fasteners, etc. Will purchase new pads and U/T bolts as well to be safe. Any other recomended modifications while I replace the leaf springs?