Leaf springs

I'm looking to get new leaf springs for my 98 ex cab TRD, mine are done for as well as my rear and front shocks. I have had this truck for a few months now and it looks as though one of the previous owners took off the stock shocks (bilstein) and put on junk, not sure about the leaf springs except they're really sagging and say "made in mexico"? I've also been noticing the back end coming completely off the ground when a i hit big bumps or potholes. As is the case with most people money is the issue, i have a friend who's got his used shocks off of his 04 TRD ex cab and is willing to hook me up with them (i believe they have about 80 -90k on them). So with his stock bilsteins, what leaf springs would be best? Could i do ome dakar leaf with stock shocks? I don't want to do dorman, haven't read anything positive on them. I also have a fiberglass camper, weighs maybe 150ish lbs. Any help would be greatly appreciated!