Look at the first shot of the Lexus LF-A engine. The engineer’s only opened the hood at the Nurburgring 24 for a moment but we got the spy shot. The engine looks long enough to likely be a V10 as has been previously postulated. The bank angle appears to be 90 degrees for a lower center of gravity than would be available from the normal 72-degree bank angle for a V10. The intake plenum is apparently made up of a composite material, again, likely for both overall weight reduction and and lowering the CG.