nytrdr24
+1y
the bag setups off that link are for "load leveling / weight support" i.e. if you remove springs to lower your truck you can't place a load of the same weight in it as if you still had all of the leafs, so you install one of those kits to take place of the remove leafs. since i have the belltech lowered leaf spring packs i am going to try to run something like that so i can still haul a load in the rear of my truck w/o worrying about breaking a spring. these setups mount to the side of the frame & bolt a bracket to the side of the leaf spring pack. i may get one of these kits & modify it to fit directly under the frame & above the axle where the bumpstop sits. if your just looking to have a setup for weight support / load leveling the setup on the link will work on your truck, it will probably give you 3"-5" of lift max in the rear depending on if its a 900# kit or a 1200# kit., but if your looking to have an actual bag suspension checkout this link
if your going to run one of the load leveling bag setups in the rear, you could remove some of the leafs & get rid of the lowering blocks, install one of these load leveling bag setups & still run duals out he back w/o any problems. when i had mine run back in the day, i had 2" blocks with almost all of the leafs removed & had @ 1 1/2" between the top of the axle & the bottom of the frame...it equaled out to be about the same as having a 4" block in the rear & had the duals run out the holes for the bumper brackets.
as far as the cats & the pacesetter header, check out this site this is where i got my armorcoated one, it was like $235 or something shipped. i would get rid of the factory exhaust manifold & cats, put on a pacesetter header, get an aftermarket hi-flow cat (i got a 2" one from pacesetter) & a free flowing muffler (magnaflow, flowmaster, etc.) i myself would prefer to not run a cat, but do so that at least it looks legal with a cat still in your exhaust. if one of the factory cats stops up, it won't be long before you'll have engine issues.