Dana 60

Can anyone advise me on any chassis mods to put a dana 60 in a 76 A body. Its a truck axle I'm gonna have mosier cut to match my 8.25. Its got 3.5" axle tubes. I know I gotta swap plates for mounting,lines ,etc. Biggest concern is anything needing to be done to the gas tank,shocks,etc. I don't want to cut anything,as the Plymouth is completely rust free and don't want to hack it up. I'd prefer not to move the tank.Just looking for pointers from those that have done the swap.I'm also looking for a posi unit for the 60. May just do a "lunch box locker" in it. Street use mostly. If its alot of change, I'll just go 8.75. I have a fullsize complete with an open 742 case available too. I know a 60 would last 4 ever. Thanks all.