Years ago I looked at the 6-pack for my 90 GMC. The issue I had was that most of the settings required higher octane fuel and I did not want to pay for the higher octane.
I then bought a newer muscle car that solved my need to make my truck faster.
You can get a custom chip made that is made for your mods and will be much less than the 6-pack.
Look at
www.pcmforless.com www.tbichips.com or
www.fastchip.com
There are others but this will give you an idea of what is out there.
//2000CAYukon