I've made a few changes and additions to the shift kit write up to help make it easier to follow. Due to several people asking me how to make a shift kit I decided to add that as well. This should be very easy to follow, I've had no complaints about the write up, I just wanted to add some more information for reference. If something seems hard to understand, just say something and I will make it clearer.

https://www.gmforum.com/t278802/

how intense are the shifts?

It firms them up a bit, nothing to harsh.

so this helps the clutch, lowering the trans temp, and quicker shifts

That is correct. The clutches wont slip as much so they don't wear as much.

Does this apply to automatic transmission as well? (sorry if that'* a stupid question)

The write up is for a 4t65e transmission and that'* a automatic. However your year has a 4t60 and this write up will not work.

Haha, that'* good to know before I went and took it all apart! So, uh... nothing like that I can do for mine then? (btw good job on that guide, very well done.)

Toddster did something to his. I think it was something like a vacuum controlled shift modulator or something like that. I seem to remember it was real easy to do.

For some reason when I hear "vacuum controlled shift modulator", "real easy to do" isn't the first thing that comes to my mine. lol Thanks I will message him.