My new to me 67 C10

[Grumpy old man]

Before you drop a bunch of money install a set of rear 4" drop springs and pull your front springs and cut 1 coil off and find a factory front sway bar . , That should give you a 2"/ 4" drop and cost less than $125.00 . drive it and then decide if it works for you or you want to go lower and spend more $

Once you start going lower you'll need a lot more parts and time , $ . When you decide to go drop spindles with disc brakes and lower rear springs you'll also need new ball joints ,etc etc thats when it all starts .