HELP mk1 capri springs HELP

[glenbo]

my mates got a mk1 capri and it seems that the axle is about an inch forward than it should be.its got the original springs,axle but the centre bearing bolt holes on the prop are an inch out of line.its got lowering blocks,poly bushed and gas shocks but that is all thats changed.we did notice that the rear springs seem to have more of a bow in them than normal and the rear of the springs is touching the chassis when jacked up.does anyone have any solutions or come across this before?we think that the springs are knackered