Question about buying Carter BBD for my 318 (unless I should look at something else)

There's an Amazon vender that is selling a couple different carbs branded as "Dromedary". The two carbs (about $140 CAD each) are:

Dromedary Carburetor Carb For Dodge Chrysler 318 Engine Carter BBD Lowtop 2 Barrel V8 5.2L MB-172-HCY

and

Dromedary Carburetor Carb 2100 Fits For Ford 289 302 351 Cu Jeep 360 Engine 2-Barrel A800

They're both 2-barrel, the 2100 model says will fit 1964~1978 Jeep Wagoneer Engine 360 Cu and a bunch of Ford but the hole spacing looks too wide for my intake.

What I don't get is that the first carb is listed for both 318 and the slant-6 so how can it be jetted correctly for both?

The BBD currently on the car has 1902 on the airhorn casting and 1933 on the body.