Been doing a little research and come to find out that I cab buy an entire unit (motor and pump already mated) and shipped to my home for < .3K. Some of these units are powered by a DuroMax engine which I know nothing about and have not been able to find out much about. Some of the reviews you find are good and some pretty bad. Anyone know anything about these engines? Another until I have found is called a Gentron. The same kind of thing....they offer a until with a 2" inlet and outlet that develops 35.5 psi. I don't know what engines they are using nor have I been able to find out and I do not know if 35.5 psi will be enough to do the job. Thoghts, comments? Thanks guys!