If you want to keep a simple dead head system that will still feed your combo, I'd recommend the Aeromotive street rod pump. It's their smallest one but it works really well. It fed my car up until 2 weeks ago when I upgraded to a return style system using the A1000 pump. Only reason I upgraded was I started having issues with vapor locking when I drove the car on hot days.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax