Lexus ISF 09 for X Motor Racing is available for downloading. Excellent physics and handling.
https://mega.co.nz/#!DtxnUY5Y!TsQgPznZXH18PhnJnDzE0pNoDjdRTUQOBb0WCdRuNIs
http://www.mediafire.com/download/e24p2ed1x9o1brr/xmr_lexus_isf_09.rar
Download the car, unpack, copy to XMR folder and enjoy it. It works with the full version.