I will have a set to sell in about a week. They are the LR heavy duty springs from Rovers North. They have been used for about a year and are in excellent shape, no rust. Part numbers are:
NTC8572 rears 16.5" 210-280? progressive
NRC8044 fronts 15.4" 155-215 progressive (stock disco rears, stock 110 fronts) These were bought brand new, they are not old rears swapped to the front.
I also have some OME 781 (16.7" at 290 lbs./in.). They have about a year of use also, but they are pealing and rusting. The coating is no where near as good as the genuine LR springs. I got these to use with the NRC8044 fronts, to take more load, but a spacer would work with the LR HD rears also.
Send me a p.m. if interested. Thanks, Dave