Need to make a decision fast 5.7/6.1/340

Uhcoog1 said
Regarding fuel system:
Carter 4600HP $115
BC Bronco's fuel accumulator - $70
Walbro GSL392 $110
Wix. 33737 - $40
Fittings, etc - $100
Cheapest EFI fuel system that will handle 600 hp

How much of a whine is coming out of that Walbro?
If it's too loud it would drive me crazy on a Houston-Dallas trip