This custom fuel system was used to supply ( 2 )1250 Dominators that was fed by a huge fuel pump that put out 10 lbs. pressure. One regulator was set at 7 lbs. and sent fuel back to the fuel tank. The other regulator was feed for the carbs. at 6 lbs. and sent fuel back to the fuel tank. The log is custom made with a mounting tab. ( if you are running in multable elevations it is quite handy).