Yes you can run an electric in series with your mechanical. You can turn on the electric when you need it, like when you are at the track. I did this many years ago on my 440 6 Pack Challenger. I plumbed a Blue pump with regulator. (you can add the Red pump without the regulator) If it is falling on its face on the top end it is starving for fuel. Thats what mine was doing and this solved the problem. I still run my Hemi Challenger with this set up. Kind of an old school approach, but it works.