[dtw]

A quick search turns up these guys in Brighton:
http://www.dieselserviceandsupply.com/contact.aspx

And six results in the Denver area: http://yellowpages.superpages.com/listings.jsp?SRC=com411&C=diesel+injection&R=N&STYPE=S&MC=1&T=denver&S=CO&F=1&CP=Automotive%5EService+%26+Repair%5ETrucks%5EDies el+Fuel+Injection+Service%2C+Sales%2C+%26+Parts