4.5 " lift needs help

I have read posts about building bastard packs to gain lift...I have a 4.5"-5" lift that needs help in the rear when loaded down to wheel....could I add a leaf out of an s-10 or somthing to gain lift under load....it is a re lift that is starting to sag............
thanks

i dont think an s10 spring would LIFT it any...

it would stop the rear from sagging, but youll notice the extra spring rate when you try to flex... get an extended shackle itll do wonders

sorrry i forgot to add I have already added a 2" shackle (I added a 2 inch shackle to take out tthe lift block)....I am looking at adding arch to my 4.5" worn out leaf kit............thanks

the only way i see you getting arch is by getting some 4.5" lift springs, even just the main spring. that could give some arch