maybe I should or shouldnt have posted how I did mine, but I am a very big tight ass when it comes to money.
In my previous days I did nothing but majorly suspension for GM, from vettes to camaros to trucks, and to me suspensioncomes pretty simple, its all geometry.
and to me spending $ to modify a suspension that isnt going to see a road course but mainly the street is well not my cup of tea.
Our vendors must make money an do urge most to but the kit from them, its simpler, quicker, and alot less hassle.
but when you take into consideration of lowering an RC or QC, it comes easy.
the rc jsut uses blocks and u bolts, to adjust ride hieght. the siz block determimes the amount, and a billet block is the best way to go, most cast blocks will overtime crack or completly break in to. So I have always suggeted steel or billet blocks.
on the front you havethe coil springs, if you cut no more than one coil it doesnt adversly affect the handling or copacity of load.
th correct way is to pruchase a new spring, and most spring manufactures you call will ask mainly front end weight, and choose from there.
After this is acheived you must take into consideration the shocks and the rest of the suspension and ho low you want to drop.
going 3 inches or more on the rear will need to have the frame c notched, easy process, jsut timely.
the front is a different story, after so far you loose travel, and a new lower control must be fabbed up.
but even with 2 inch drop , the front bumpstops need to be removed from the stock location and new thinner bumpstops drilled and mounted to the lower control arm.
the rear bumpstop needs to be either cut down or removed and replaced.
the sway bars either need to be cut and rewelded to the correct angle or a kit from Justin purchased.
The shocks are a different story. up to 2 inches the stock ones work well. but you can also take you measurments and call bilstein and give them the measurements and weight of the truck and they can get you the correct shock.
or buy the Qa1'a from Justin is preffered.
also with the lowering of the trucks a bumpsteer kit is really needed to correct the angle of the tie rods.
While my process is backyard redneck style, my truck is lowered, its safe, rides great, handles wonderful, dont wear tires, was relativley easy to do, and best of all cost me only a little time and a block kit for the rear.
but a person needs to be decent with a wrench and a welder, and a tad bit of comon sense.
But again buying a premade kit, with all the parts and instructions from a well based suspension company is preffered, they have allready done the homework for ya.