Disco 1 110 front springs on rear of a D1 V8 ??

Can you fit 110 front springs on the rear of a D1? They look the same as my current springs but slightly more up to the job. My car sags on the driver's side at the rear.

I know rear 110 springs can be fitted but with a little modification. (That's the eventual plan)

Thanks in advance

Land Rover front springs are typically quite a bit shorter than rears, so although the spring rate might be higher (stiffer), the reduced length could cause the rear to start very low.
110 fronts will be approx 380~390mm long - dependant on actual spec, whereas D1 rears are approz 410~430mm - again dependant on actual spec.

There must be some better spec springs as the police used them.
Just think of the extra weight they carried

Why not just go for HD Disco rears? Unless you don't want the likely 2" lift.
I did this and put the rears on the front. This led to a much tougher, firmer ride all over, i was going for strength for long distance towing of heavy loads. The 2" lift all round was no problem.
I do realise your reasoning is not for exactly the same thing.