whats the part number on that fuel pump

MSD 2225. Make sure you test the pressure going to the fuel rail after you hook it up to test and make sure your pressure regulator is working correctly.

where to buy it ,and do i need a ext. regulator

Summit sells em for around 100 bucks, alot less than I paid. You dont have to run an aftermarket pressure regulator if it is still good. I was using my factory one. It says that this pump is rated for almost 100 psi but it runs normal at around 45 psi and isuzu states that the motor needs around 38-42 psi.

thanx should be able to get rid of the charcoal can am i correct