Search bar in the upper right corner. Welcome, and in all fairness to everybody, take a few minutes to read the forum rules. They are short, sweet, and work. From there, we try to build a knowledge base here. For info you are seeking, search first to see if it has already been covered, rather than making people repeat themselves and their stories. This is not mean, just the right, polite, and fair way to do it. A few minutes to read their issue and resolution could save you a tremendous amount of your own time and/or money spent trying to achieve the same exact thing. In 10 minutes and for $0, I could discover the cost and benefit of adding a turbo to an NHC-250 powered 5 ton truck. I am not sure an electric lift pump has been covered, but for the other items you are seeking, I know they have been. Carter makes an electric lift pump that is available at NAPA, available in 12V and 24V, and maybe under $100. The 500hp Cummins ISX semi truck engine uses it stock from the factory, if that is any type of reference....
http://www.summitracing.com/parts/crt-p4603hd?seid=srese1&gclid=CNqE7eiAlMoCFQuSaQodun0Pbw