is there that big a difference braking between the different OE brake setups on 90 model Z71?

Hey all
sorry to bother yall, but i was looking through the LMC catalog yesterday and it shows like 4 different sets of brakes on my year model Z71, i have
just the plain ol' brakes, but there was like a heavy duty chassis option and two different GVW rating brake systems there really that big a difference between all of them? I mean, mine stops me well enough, i just didn't know if it was that huge a difference and 2nd, if they're that much better, can you install the different brake systems on a truck like mine, with just the plain brakes?
thanks yall
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.