coilover springs

[rsx84]

bought a set of reco'ed s-13 JIC front coilovers and they have a set of King springs in them, they are to go into my r30 for a gtst brake upgrade, on the springs there is a figure of 400lb, whats this in relation to??

also they have adj chamber tops and to fit them in the r30 these tops need to be reversed will this process have any effect on chamber adjustment?

[DR30RS]

My front King springs are rated at 325lb from memory and are more than stiff enough.400lb may be a bit teeth shattering for the road,but they are cheap to replace should this be the case.