This 2-piece adapter will allow you to mount a Weber IDF (up to 48mm) on a Holley 4 barrel manifold. And connecting hardware is included. Hardware to mount adapter to manifold is not included. Total thickness is 1.625. There is no gasket to go between the two pieces so you will have to use an RTV type sealant.
If you are unsure of fitment, send me your bolt center to center spacing and I'll check it. The last few pictures are examples of different applications. None of these extra parts (carb or manifold) are included. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Other Car & Truck Parts & Accessories".
The seller is "ecdezz" and is located in this country: US. This item can be shipped worldwide.