Oversized exhaust valves

It will have to be sunk in ar least. 010 to clear. I do have access to a Neway cutter setup for free. I am going to try that first. I do like to have a plan B just in case. Same subject; has anyone ever cut down an intake valve and used it as an exhaust? Got plenty of 318room intakes lying around. I want to do this build on the cheap just to see how little can be spent to get decent dependable power. Most of us don't have the resources/deep pockets to do a "magazine" build. I'm not great on the computer so a build post will be a pain. I am planning to start one for the engine and overdrive install early next year. If there are any members nearby it would be great go have an "eyes on" sounding board. I already know I'm half backed and loony so lets stick to the facts. Thanks.