I currently have a 69 FJ40 with a 70 rear axle under the rear and a 76 disc in the front. Both have 4:10's. If I were to put 3:73's in both axles would the shafts have to be changed as well or can I just change out the complete 3rd members. Is it a direct bolt up. Thanks for any information.:usa:

It's a direct bolt up. for the 3.70 third member.

Jeff