Hello & welcome JackDailey ~ I think your truck is lucky to have you as it's owner Having fun fixing & improving :^)

Almost 15,000 views on my thread "Mikuni Carburetor" have a look: http://www.mightyram50.net/vbulletin...uni-carburetor

Shamrock Wrecking yard in Ridgecrest, CA might still have three 1985 & 1986 California emission feedback type (O2 sensor) Mikuni carbs, they did a year or two ago ~ keep in touch with PickNPull inventory & nab a used carburetor from them ~ having a second carburetor to play with is the way I did things but no need if you are mechanically inclined ~ ebay is your friend on buying the harder to find rubber software parts diaphragms & the like... I THINK the 1987 & later carburetor floats are all the same as the ones in the 1985 & 1986 Mikuni carbs ~ OEM are plastic and fit better than aftermarket floats FYI...

I post a bunch in "What Did You do to Your Truck Today" in the FORUM "General Discussion" section ~ have a look at the last page to see your air cleaner case has more than one filter, it has three..! Did you know..?