Cool. A 2" lift kit with inbuilt camber & caster offsets and 2" rear subframe spacer kit is $620 AUD.
2.5" rear spacers is an extra $20/pair to correct any butt sag or if you load up the rear with gear ($640 AUD)
Camber & caster offsets are built in to keep the front wheel alignment in spec & optimise handling.
The rear subframe spacer kit keeps the rear alignment in spec & keeps the rear wheels centred so you can fit bigger tyres without rubbing. Maintains suspension droop for more grip offroad
The subframe main spacers are 6061 T6 billet alloy for ultimate strength & toughness and come with custom forged, grade 10.9 main bolts, a serious bit of hardware! Very easy to fit!!! (No awkward upper & lower bolts to reach from behind like other kits)
The kit is CAD designed & CNC laser cut 1/4” steel (not 3/16" like other kits) for ultimate strength & toughness, and is professionally rustproofed and powdercoated FREE.
This is a very complete kit, supplied with front, rear & subframe spacers, brake line bracket extensions, centre bearing spacer, all high tensile bolts & nuts, fitting instructions & stickers.
The kit is very tough, 33% thicker than the opposition & 77% stronger! Guaranteed to never bend!!!
It's pretty easy to fit yourself if you're mechanically minded and have the tools. The kit comes with detailed step by step instructions with photos, just follow them & you'll be fine.
After ordering, build time is around 3 weeks & shipping a couple of days.
Forester springs and struts are a good way to do it on the older models but I don't recommend it on your GH Impreza. You won't be able to get the front alignment in spec doing it that way.
I recommend strut top spacers with camber & caster offsets. This will keep the alignment in spec & keep the good Subaru handling
Either way you will still need the rear subframe spacer kit to keep the rear alignment in spec