I asumme you are talking about a rear 60. there is a big difference, like one, some 60's are SF's and all 60's only have a 9&3/4 ring gear compared to the 14's 10.50. The axle tubes and axles are bigger on a 14FF. The only benifet of a rear 60 is there is more aftermarket lockers available and lower than 5.13's can be installed. As far as strength, 14FF!