Iv'e seen a few of these on youtube and like you said it is a huge contraption to fit on a GT. It's another thing I would love to do but probably will never do. Another thing to you need to be able to build is a tar free gasifier or near tar free and you need to have a great filtration system. If you run the engine without a filtration system the tar will get in the valves and sieze your engine. If you build one I would love to see how you do it.