Really to get the bulk of that gone, all you would need is to get at that half inch bolt holding the tank on and the 3/8 bolt on the front, I would support the tank underneath by wedging something solid between the tank and the base (to prevent breaking the tab that holds the thread for the 1/2 inch bolt, and pry away at the plastic with a screwdriver, chances are the govenor springs may be melted into that mess, so A wise approach would be to remove the top 3 head bolts and ignition coil and tank as one assembly.
I have seen the fuel tanks break and leak where the 1/2 inch bolt holds them in, ample fuel would spill out to start a fire, all you would need is enough heat for it to hit the flashpoint.
once you get it stripped down, you'll probably find the main block assembly will be fine, I have ressurrected worse, and the victa base in the pics looks worthwhile to put a good engine on.
