And doing this is not hard at all. All you need is an basic camera, from your handheld digi to a 1k slr, if you can get one picture at 3 different exposures you can do this.
Set up a tripod, change your settings to a long exposure, normal exposure, and short exposure, to get a bright, normal, and dark picture, of the same picture. Then do the same thing with the hood up. Download photomatrix, make an hdr of the first pic, make an hdr of the second to get the color effects, then in photoshop cut out the engine, and paste it into the pic with the hood closed, then lower the opacity, erase some of the outside with a low opacity, sharpen the pic, resize it, and your done!