Take a rust-free Pig over a 60 any day, what you've found is a very rare bird

A '78 is mechanically identical to an FJ40 of the same vintage, so there is plenty of H55 swap info out there for you (actually easier due to the longer wheelbase). Your biggest hurdle is the e-brake - you can do an eldorado disk swap ... line lock etc. to get around this.
The hardest thing to find on the piggies is body parts, if that's in good condition you pretty much have the whole spectrum of OEM/aftermarket 40 parts to choose from. You're best bet on lift is getting custom Alcans made - OME used to make a 55 lift as well ... stay away from the Man-a-fre at all cost. Ironpig offroad has bumpers and sliders for pigs, Man-a-fre has some stuff as well.
I can't remember one time I drove my pig around town with out getting nods, stares or questions ... way cooler than a 60 IMO.
Tucker