Suspension Question: Coils, Shocks & Lifts

Hello again guys.
Thanks for all the help so far with my dumb questions while Im rebuilding my CSW. Here's another one for you.

I've just taken my bulkhead & B pillars down to Ashtree for some galv-lovin' and while it's off thought I'd have a look at the front suspension.

A few years ago the previous owner, on having the whole body swapped as one over to a new galv chassis, had the rear suspension replaced with a 2"ish lift.

The front suspension looks like the same it had the day it was born:



Using ninja hacksaw and grinder skillz, I managed to get the rusted old shock absorber off. The existing spring is something like 41cm uncompressed. The rear spring is about 36cm compressed when fitted.



So I'd like to replace the coil & shock & turret & fittings. But browsing manuals, forums and ebay listings I cant seem to find any guidance on how you specify coils and shocks and turrets so that they all work together.
If I want, say, a 25mm-50mm lift at the front to match the rear with, say, a medium load coil, I'm guessing I need to find a "50mm lift coil" and a "50mm lift shock absorber" yes? Can I use a "standard" galv turret or do they need to be "+50mm" too?

None of it needs to be special, or off-road spec, just something fairly basic and even better all from the same place even an eBay seller. Thanks for any help.

anybody? I cant tell from the radio silence whether it's a particularly daft question or an unexpectedly tricky one?

Why not just replace all springs and shocks with standard height ones? Why there's a 2 inch lift on the rear and not on the front is beyond me plus if you lift it you need to really start looking at replacing the castor arms, props etc...

If the 2 inch lift on the rear was done to carry heavy loads and you still want that capability then why not just fit standard HD springs?

I'm guessing the rear lift was done by the previous owner during the chassis swap because the originals were shot, and he went with a lift "just because"

I don't want to have to get 4 replacement suspension sets when the rear two are only a few years old. I'm only aiming at a modest front lift to set a more level ride. I don't need to spec for additional load carrying.