Doesn't really matter at this point what year it is. a stock truck (of that year) will have about a 37:1 crawl ratio.
here is the breakdown of gearing assuming you have stock Ring and pinion gears

Stock single case: 37:1
Single case w/4.7: 76:1
Dual stock cases: 84:1
Duals w/4.7 in one case: 173:1
Duals w/4.7 in both cases: 356:1

so, you need to decide what type of driving you want to do with your truck, and change the gearing appropriately. in most instances dual cases with 4.7 gears in one case will be enough to get you by, but some of us like to get extreme