They do this type of things to the heavy truck Cummins engines so they can pour more fuel to them and get 700+ hp out of them. Could do that the same way here but would the bottom end hold up? I guess if you have the money and ability to do this it could be a fun experiment. Here's a link to the how to for the Cummins. http://www.dieselinjection.net/articles.html

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1985 300D Turbo ~225k
2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k
1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k