Dude, if you're only going 2" you don't need all that stuff. Your stock shocks can cope with 2" lift as can your damper. If they're cactus then replace em but if they're still good just keep em.
I had a Landcruiser ute with leaf springs that would blow most peoples minds. Get hold of "Superior Engineering"
4wd Accessories Australia | 4x4 Parts | Landcruiser Parts | Brisbane, Australia - Superior Engineering & get some 3way drop shackes for the rear. Then go to "Snake Racing"
4x4 Accessories, Suspension Kits and 4x4 Parts for your 4x4, 4WD vehicle | Snake Racing Australia & get their drop shackles for the front.
Both shackles will give you a 2" lift but superior's 3way drop shackles will allow the leaf to twist & with the drop function can give you up to 28" of travel. The reason you get 2 different sets of shackles is that if you were to fit 3way drop shackles to the front, you can get a sloppyness about the front end when cornering on road.
These shackles come with pins & new high quality rubbers. They're so easy to fit you could do it yourself & should cost no more than $1K. You won't get better performance out of leaf springs any other way. If you do this though, then you prob should get extended shocks. Tough Dog would be the best. I wouldn't use Rancho's on a leaf sprung vehicle, they wouldn't cope with it & would restrict things as they use small valves internally.
I do highly recommend serviceing ea leaf pack while you're at it. This involves pulling the leaf pack out, splitting it (making sure to put it back together the same way), sanding ea friction surface & polishing, then smear a high quality marine grade (water resistant) grease between each leaf, then bolt the pack back together & make sure the edges of each leaf & clean & grease free before giving the whole pack 3 coats of good quality paint.
You'd be surprised what a difference that will make & how easy it is.
I guarantee if you do this you won't be disappointed. This is what my cruiser was like with the drop shackle locking pins still in!!!!! You can expect even more result from a patrol. I didn't have drop shackles on front when these pics were taken, just extended ones.