You won't find many (any) that would suggest the spacers over springs and shocks, but I'm not going to get preachy...The job will suck. Everything will be rotted, stuck in place, fused together. I'd pre-buy new hardware, get a spring compressor and to get a little more room, you can use a bottle jack between your frame and axle. Not rocket science, just a job that will take longer than it should, cause it's a Rover!