Just a suggestion.....if you plan on running a mechanical speedo Camaro T5, which most likely has a .63 OD, you want to crunch some numbers and figure out what diff ratio you want to run with whatever height rear tire you choose. Your 235 will be happiest with your favorite cruise speed at between 1900-2200 rpms. I like to use the bottom calculator:
http://CSGNETWORK.com/multirpmcalc.htmlOnce you lock in on the ratio you want to use, then you have to consider the availability of that specific ratio. Pull up some information on the rear axle ratios for the 4wd S10 Blazers and see what they offered, and how many may be available, of the diff R&P ratio you wanted. That may be the deciding factor in which diff you ultimately wind up running.
You just don't want to box yourself into a corner and wind up having to buy a diff and then springing for a R&P change to get your truck geared correctly and to get rims that will give you the look you want.
Dave