some people hate these... but it will fill the gap. https://forum.ih8mud.com/sale-parts/397187-1987-fj60-batt-tray-light-guards-air-intake.html scroll to the second picture in thread
rubber gasket between carb and filter body... mine was missing for years, I replaced it today and it made a big difference. my vacum gauge reads higher and the intermitant bucking toned down a lot.:)