I've bought some of these as well as some of the IXO 1:43 models and you have to be very careful and ask for precise measurements first (only some sellers are willing to do this). Some of them are a nice size, but most are simply too big.
The ones I've fond that are almost perfect are the DeAgostini Model A Gaz (license-built copy of the Ford car) and the ixo museum salomon.