Replacing a Mikuni Carburetor with a Weber Carburetor

[85Ram50]

EDIT 5-22-20 - This did not work. It bolts on fine and has a center pin but it is too high and doesn't allow the OE air box to sit on it properly plus its like 3 inches above the studs it is supposed to bolt down on the valve cover.

I ended up ordering this https://www.ebay.com/itm/Toyota-Air-Filter-Adapter-20R-for-Weber-Carburetor-32-36-DGEV-or-38-DGAS-/400796653831