ARB make a couple of different springs depending what gear you have:
For the front end : Nothing fitted (part # 3056); bar only (part #3057) and bar + winch (part # 3058).
Similar for rear : Medium load (EL072R), constant 300kg (EL073R) and constant 600kg (EL074R).
funny that i got a quote for front springs today from ARB

and with BAR ONLY the coil spring part# number was 3058,maybe they have worked out it was too light for the winch and bar

300kg constant rear springs was ELO73R.was quoted $10060.77 for (1)greaseable shackles(2)Front coils(3)rear 300kg constant(4)u/bolt washer and nuts(5)h/brake relocation kit, does this seem too expensive? im also getting an ARB deluxe bar fitted tommorow(friday) so im hoping to get this price down if im lucky

What's the brake relocation kit do, apart from the obvious, is it just a move or lengthened lines? mines at 580 on the rear and the lines are ok but lots of others have had to lengthen.