I've been interested in exploring alternate fuels and turbo charging for the V-10 (my holy grail is big power with 18-20 mpg or equivalent in the lightfooted mode). Ford makes the 5.4 V8 with a propane or compressed natural gas option not the V-10. With some searching I've found a couple of interesting links, one using a V-10 turbochaged with hydrogen as fuel and another for Ford's industrial V-10. ...just in case anyone is interested in this motorhead stuff.
http://www.fordpowerproducts.com/

http://www.findarticles.com/cf_0/m31.../article.jhtml

Cheers!