If your'e going to go to the trouble and expense of doing a swap why not go with an 8cyl, such as the infiniti engine. Those are on e-bay from time to time and could work. Better yet, just drop in (with liberal use of giant shoe-horn) a Merlin 500ci+ crate motor The X would certainly be interesting with 800+ hp to the wheels...that might make for a few more mods though You could mention during the oil-change paperwork that it has a slight miss at 8500 rpm, should be good for a laugh