It not just as simple slipping on a boot as you got to install a new contact terminal for the switch over. Now there are contacts that are just a coiled wire that can be used in cases where you have a 45 degree entry or bendable contact. I have seen both available on net. There are also Crimp-on terminals. I would suggest whichever one that make this least vibration resistance. Personally I used the crimp terminals whenever I can but I have a professional installation tool for doing open barrel crimps.
If you look close at the first post's image and does take keen eyes you see that Honda boot was a 45. Now most Briggs are either 90 or 180 (Straight) boots and terminal. As far as the Victa someone on you end would need to chime in as I have never seen one. Second thing to keep in mind if installing a new style boot and terminal is the plug wire diameter as there are 5mm, 7mm, and even sometimes a 8mm use on some engines. 5mm are used on the handhelds and 7mm on most walk behind and riders here.