Sounds about right,but I'd swap out the rear end first,so the torque tube won't be in the way.I believe you'll have to drop the rear spring hangers and then should be able to roll the rear end right out the back.
Speed

1954 GMC 350
1957 GMC 1/2 ton
1962 Chevy C-30
1952 Chevy 6400 dump bed project truck
'98 Harley FLSTC
'66 Pontiac Catalina
'76 Chevy 1 ton Duallie
'84 Bronco II
'78 Dodge W-200
'81 Toyota 4X4 truck