I have not seen a non a/c option for the alum. bracket setup, but there may be one. I would THINK they should or has to be a non a/c setup with alum. bracketry. but I'm unsure.
For my steel setup there is and was a non a/c setup but it required me to hunt down the right tensioner bracket and support rods/braces to make it work AND buy the shorter belt.
Honestly though if it destroyed your belt you are buying one anyways so why not just buy the same size one you have for a/c and then buy the pulley.
Check around and search online to see if you can find a non a/c belt routing diagram for the year of your truck, that is what I did and found out the bracket were different, then I hunted down a bracket to convert mine.
If there's another way to route your setup without the change of bracketry then you're in good shape, buy the non a/c belt, reroute according to the diagram, and you're done.
compnine used to have diagrams and all autoparts places should have them, so go online, goggle image search, visit the stores whatever man.