[69gmcc10]

Options for "handling Kits" and stock ride height don't really exist because the easiest way to improve handling is to lower the center of gravity, especially on trucks, so your kind of starting at a disadvantage. That is not to say that that better handling cant be had, you just need to be realistic with your goals and the parameters you have placed on yourself. Also, your question is a little vague because we do not know the current condition of your trucks suspension or any mods you have already done, but we area real good at spending other peoples money so here are some generic things to start thinking about that should be checked off anybody's list to improve there ride and a few ideas to get a little more.

If you want to keep the stock height replacing worn out suspension components (inner and outer tie rods, ball joints, pitman, idler arm, leaf bushings) with some new quality parts will make more difference than you could ever imagine. I always go moog.

Shocks, Buy good shocks, Monroe OESpectrum are a good start, you can go Billsine, or even crazier if you like.

Get a 1 ton sway bar for the front of your truck with some polly bushings. You can buy new factory style units from Early Classic, source the bar from a junk yard and just buy the bushings, or buy an after market bar with more modern technology from the likes of Helwigh or No Limit.

With leafs the best option you have to hook up the rear suspension is a set of caltracs, if you are unfamiliar look them up. but you could also get a torque bar or something of the sorts.

Other things you can do to make a difference and also improve handling are ditch the worn out steering box and get a faster ratio from a later model or the after market, new body mounts to stiffen up the chassis, and a good wheel and tier combination for your driving needs/wants.