Luke wrote:MIne has a 1" raising block inbetween the leaf and the axle!! thats coming out if it looks too high
if you do let me know as i might be interested in them
now as for the lowering thing, there is a couple of things you can try, some have been covered already
Rear
1) relocate axle over springs, but not recommended and a fair amount more work than you think
2) change the shackle length
3) Redrill the mountings to allow higher placement
4) change the springs

... not all will sit so high, or even get some tired springs

i swapped my tired old springs out for some others and got a 2 - 3" lift
Front (not so easy as less space to work with)
Best i can think of is to redrill and relocate the hanger postitions, or possibly swap out the springs for those from a lighter engined van, those will sit lower
now for the bit always overlooked .... shocks, remember if you dont get shorter ones, then your original ones will be permanently compressed 1 - 2" more than they normally would be, this might lead to a stiffer ride