Wanting to replace my rear leaf springs. Currently have a 8 (7+1) pack. SPID code is G50-Heavy-duty rear springs. They are OEM. I am thinking that this maybe later on became known as a Heavy Half, not for sure. Looking to get standard stock springs. Not sure if it is a 4 (3+1) or 5 (4+1) pack for standard 1/2 ton LWB. Would like information for this. Thanks. Also, if any DFW members can recommend a supplier would be great.