Hey everyone, I've been reading about ford rear gears and searching mostly by googling. I found this site called www.ford-trucks.com and as soon as I looked for articles there's this chart that contains different gear ratios from 90's ford trucks. Here's the chart: http://www.ford-trucks.com/article/idx/7/022/article/Ford_Axle_Code_Chart_.html Too much crap, I'll be brief. Do these truck gears fit in a 8"?? or will they strictly fit in a 9"???