air box Mazda RX with IDA weber https://www.efihardware.com/products/145/air-box-Mazda-RX-with-IDA-weber
Air box rotary IDA Carburettor. Fibreglass separate top and base (no latches or seal) with 130mm diameter inlet. For Weber IDA carburettor and some IDA throttle bodies on rotary egine applications. Base is not drilled as orientation of manifolds, bores and bolt holes can differ.