There is nothing that will sound like an Lambo motor especially something that will put out that kind of power your looking at. This has been discussed several times in the past. The Lambo motors get there sound from the firing order, piston size, being balanced, cam & there high rpm's they spin. If your looking at a motor with the power your talking chances are it will have to have a cam and will make it have a lope to it. I would love to have someone prove me wrong because your searching after what we all want.